Question

Решите уравнения:(7 класс)
1)х-2(х+1)=3(2х-2)+5
2)3(2х+4)-(х-2)=35+(х-6)

Answer 1

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Answer 2

х -2(х + 1) = 3(2х - 2) + 5

х -2х - 2 = 6х - 6 + 5

х - 2х - 6х = -6 + 5 + 2

-7х = 1

х = 1 : (-7)

х = -1/7

3(2х + 4) - (х-2) = 35+(х-6)

6х + 12 - х + 2 = 35 + х - 6

6х - х - х = 35 - 6 - 12- 2

4х = 15

х = 15/4

х = 3 3/4