Question

eu nao consigo entender

Answer 1

A) 3-(3x-6)=2x+(4-x)
3-3x+6=2x+4-x
-3x+9=x+4
-4x=-5 .(-1)
4x=5
x=5/4

B)4.(x-2)=4+2.(x-1)
4x-8=4+2x-2
4x-8=2+2x
4x-2x=2+8
2x=10
x=10/2
x=5