Question

9x-7=5x+13



2•(2x-1)-6(1-2x)=2•(4x-5)

Answer 1

9x - 7 = 5x + 13
9x - 5x = 13 + 7
4x = 20
x = 20 : 4
x = 5
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2(2x -1) - 6 (1-2x) = 2 (4x - 5)
4x - 2 -6 + 12x = 8x - 10
4x + 12x - 8x = - 10 + 2 + 6
16x - 8x = -10 + 8
8x = - 2
x = -2/8 ------------ simplifica por 2
x = -1/4 

Resposta: 
x = -1/4