Question

1+7x/7 - 1 = 3/7-2 (2-x)/7= 1/2

Answer 1

Ola Heloisa

1 + 7x/7 - 1 = 3/7 - 2*(2 - x)/7 

1 + x - 1 = 3/7 - 4/7 + 2x/7

x - 2x/7 = -1/7 

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

5x/7 = -1/7 

5x = -1

x = -1/5 

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(2 - x)/7 = 1/2

2*(2 - x) = 7

4 - 2x = 7

2x = 4 - 7 = -3

x = -3/2