Question

3×-6=×

5+9×=4×+15

3y+7=2y+1

2.(×+4)=×+11
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Answer 1

Resposta:

$3x - 6 = x \\ 3x - x = 6 \\ 2x = 6 \\ x = \frac{6}{2} \\ x = 3 \\ 5 + 9x = 4x + 15 \\ 9x - 4x = 15 - 5 \\ 5x = 10 \\ x = \frac{10}{5} \\ x = 2 \\ 3y + 7 = 2y + 1 \\ 3y - 2y = 1 - 7 \\ y = - 6 \\ 2(x + 4) = x + 11 \\ 2x + 8 = x + 11 \\ 2x - x = 11 - 8 \\ x = 3$