Question

...~ Me Ajudem..~



A) 2(x-1)-2(x-2)=-(x-3)

B)3-(2x-1)=3(-2x-1)

Answer 1

A)
2 (x-1) -2(x-2) = -(x -3)
2x -2 -2x +4 = -x +3
2x -2x -2 +4 = -x +3
2 = -x + 3
2 -3 = -x
-1 = -x

*multiplique por "-1" nos dois lados*

x=1

B)
3- (2x-1) = 3 (-2x-1)
3 -2x +1 = -6x -3
3+ 1 -2x = -6x -3
4 -2x = -6x -3
4 +3 -2x = -6x
7 -2x = -6x
7= -6x +2x
7 = -4x

7 ÷ (-4) = x