diff --git a/golang/go.mod b/golang/go.mod
index d1cc943c..5cecc1f3 100644
--- a/golang/go.mod
+++ b/golang/go.mod
@@ -1,5 +1,3 @@
 module isuct.ru/informatics2022
 
 go 1.16
-
-require github.com/stretchr/testify v1.8.1
diff --git a/golang/go.sum b/golang/go.sum
index 2ec90f70..e69de29b 100644
--- a/golang/go.sum
+++ b/golang/go.sum
@@ -1,17 +0,0 @@
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
-github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
-github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk=
-github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/golang/lab7/lab7.go b/golang/lab7/lab7.go
new file mode 100644
index 00000000..39170fde
--- /dev/null
+++ b/golang/lab7/lab7.go
@@ -0,0 +1,42 @@
+package lab7
+
+import "fmt"
+
+func Lab7() {
+	phone1 := Phone{
+		Size:  100,
+		Model: "Iphone",
+		Price: 10000,
+	}
+	PC1 := PC{
+		Model: "Model123",
+		Price: 5000,
+		RAM:   30,
+	}
+	Laptop1 := Laptop{
+		Model: "ASUS",
+		Price: 3000,
+		ROM:   20,
+	}
+	ProductsList := []Product{&phone1, &PC1, &Laptop1}
+	defoultCost := GetTotalPrice(ProductsList)
+	fmt.Println("За товары вы заплатите:", defoultCost)
+	for _, product := range ProductsList {
+		product.SetDiscount(30)
+	}
+
+	defoultCost = GetTotalPrice(ProductsList)
+	fmt.Println("С учетом всех скидок вы заплатите:", defoultCost)
+	phone1.SetSize(660)
+	PC1.SetRAM(50)
+	Laptop1.SetROM(106)
+}
+
+func GetTotalPrice(ProductsList []Product) float64 {
+	var defoultCost float64
+
+	for _, product := range ProductsList {
+		defoultCost += product.GetPrice()
+	}
+	return defoultCost
+}
diff --git a/golang/lab7/laptop.go b/golang/lab7/laptop.go
new file mode 100644
index 00000000..59dbf55c
--- /dev/null
+++ b/golang/lab7/laptop.go
@@ -0,0 +1,28 @@
+package lab7
+
+type Laptop struct {
+	Model string
+	Price float64
+	ROM   float64
+}
+
+func (l *Laptop) SetModel(Model string) {
+	l.Model = Model
+}
+func (l *Laptop) GetModel() string {
+	return l.Model
+}
+func (l *Laptop) SetPrice(Price float64) {
+	l.Price = Price
+}
+func (l *Laptop) GetPrice() float64 {
+	return l.Price
+}
+
+func (l *Laptop) SetROM(ROM float64) {
+	l.ROM = ROM
+}
+
+func (l *Laptop) SetDiscount(percent float64) {
+	l.Price -= (l.Price / 100) * percent
+}
diff --git a/golang/lab7/pc.go b/golang/lab7/pc.go
new file mode 100644
index 00000000..14cb7ae4
--- /dev/null
+++ b/golang/lab7/pc.go
@@ -0,0 +1,35 @@
+package lab7
+
+type PC struct {
+	Model string
+	Price float64
+	RAM   float64
+}
+
+func (c *PC) SetModel(Model string) {
+	c.Model = Model
+}
+
+func (c *PC) SetPrice(Price float64) {
+	c.Price = Price
+}
+
+func (c *PC) GetPrice() float64 {
+	return c.Price
+}
+
+func (c *PC) GetModel() string {
+	return c.Model
+}
+
+func (c *PC) SetDiscount(percent float64) {
+	c.Price -= (c.Price / 100) * percent
+}
+
+func (c *PC) SetRAM(RAM float64) {
+	c.RAM = RAM
+}
+
+func (c *PC) GetRAM() float64 {
+	return c.RAM
+}
diff --git a/golang/lab7/phone.go b/golang/lab7/phone.go
new file mode 100644
index 00000000..da2a681b
--- /dev/null
+++ b/golang/lab7/phone.go
@@ -0,0 +1,30 @@
+package lab7
+
+type Phone struct {
+	Size  float64
+	Model string
+	Price float64
+}
+
+func (p *Phone) SetSize(Size float64) {
+	p.Size = Size
+}
+
+func (p *Phone) GetSize() float64 {
+	return p.Size
+}
+func (p *Phone) SetModel(Model string) {
+	p.Model = Model
+}
+
+func (p *Phone) SetPrice(Price float64) {
+	p.Price = Price
+}
+
+func (p *Phone) GetPrice() float64 {
+	return p.Price
+}
+
+func (p *Phone) SetDiscount(percent float64) {
+	p.Price -= (p.Price / 100) * percent
+}
diff --git a/golang/lab7/productinterface.go b/golang/lab7/productinterface.go
new file mode 100644
index 00000000..e877e95e
--- /dev/null
+++ b/golang/lab7/productinterface.go
@@ -0,0 +1,7 @@
+package lab7
+
+type Product interface {
+	GetPrice() float64
+	SetPrice(price float64)
+	SetDiscount(discount float64)
+}
diff --git a/golang/main.go b/golang/main.go
index 171452ee..9c57b040 100644
--- a/golang/main.go
+++ b/golang/main.go
@@ -4,9 +4,11 @@ import (
 	"fmt"
 
 	"isuct.ru/informatics2022/lab4"
+	"isuct.ru/informatics2022/lab7"
 )
 
 func main() {
-	lab4.Lab4()
 	fmt.Println("Нерабеев Кирилл Сергеевич")
+	lab4.Lab4()
+	lab7.Lab7()
 }