Question

30-5x-7=x+2 x me ajudem por favor

Answer 1

$30 - 5x - 7 = x + 2x \\ 30 - 7 = x + 2x + 5x \\ 23 = 8x \\ 8x = 23 \\ x = \frac{23}{8}$


S = {23/8}

Answer 2

Resposta:

$\frac{23}{8}$

Explicação passo-a-passo:

$30-5x-7=x+2 x\\-5x-x-2x=-30+7\\-6x-2x=-23\\-8x=23 \:.(-1)\\8x=23\\\boxed{x=\frac{23}{8} }$