Question

resolva as seguintes equações:

a) -3(x+1) = 2(2x - 3)
b) -(x+1)-(x-3) = 0

Answer 1

a)
-3.(x + 1) = 2.(2x - 3)

b)
- (x + 1) - (x - 3) = 0
- x - 1 - x + 3 = 0
- x - x + 2 = 0
- 2x + 2 = 0
- 2x = - 2 (-1)
2x = 2
x = 2/2
x = 1