Question

решение уравнения 3x-(2x-7)=3(1+x)

Answer 1

3x - (2x - 7) = 3(1 + x)

3х - 2х + 7 = 3 + 3х

3х - 2х - 3х = 3 - 7

-2х = -4

2х = 4

х = 2

Answer 2

$3x-(2x-7)=3(1+x)\\3x-2x+7=3+3x\\x+7=3+3x\\7-3=3x-x\\4=2x\\2x=4\\x=2$