Question

-a) 8(x - 3) + 2(5 - x) = -x
b) 2(-2x + 3) - 512 - x) = 3(2x + 3)​

Answer 1

Explicação passo-a-passo:

a)

$8(x - 3) + 2(5 - x) = - x \\ 8x - 24 + 10 - 2x = - x \\ 8x - 2x + x = 24 - 10 \\ 7x = 14 \\ x = \frac{14}{7} \\ x = 2$

b)

$2( - 2x + 3) - 512 - x = 3(2x + 3) \\ - 4x + 6 - 512 - x = 6x + 9 \\ 6x + 4x + x = - 512 - 9 + 6 \\ 11x = - 515 \\ x = \frac{ - 115}{11}$

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