Question

Resolva as seguintes equações: A) 2 (2x -10) +3 (x-1) = (3x -2) - (3 -x) +X

Answer 1

a) 2.(2x - 10) + 3.(x - 1) = (3x - 2) - (3 - x) + x

4x - 20 + 3x - 3 = 3x - 2 - 3 + x + x

4x + 3x - 3x - x - x = - 2 - 3 + 3 + 20

4x - 2x = - 2 + 20

2x = 18

x = 18 / 2

x = 9