Question

2 ( x - 5 ) + 4 ( x - 1 ) = 0

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

7 ( x - 1 ) -2 ( x - 5 ) = x -5

Answer 1

Olá Melanny !!!

2 ( x - 5 ) + 4 ( x - 1 ) = 0
2x - 10 + 4x - 4 = 0
2x + 4x = 10 + 4
6x = 14
x = 14/6
x = 2,33

3 ( 2x - 1 ) = - 2 ( x + 3 )
6x - 3 = - 2x - 6
6x + 2x = - 6 + 3
8x = - 3
x = - 3/8
x = - 0,375

7 ( x - 1 ) - 2 ( x - 5 ) = x - 5
7x - 7 - 2x + 10 = x - 5
7x - 2x - x = - 5 + 7 - 10
4x = - 8
x = - 8/4
x = - 2

Espero ter ajudado e bons estudos !!!