Question

ajude aí
qual é o valor de x ?
8 (x - 5/2 ) = 3x ​

Answer 1

Olá

$\LARGE{}8(x - \frac{5}{2} ) = 3x \\ \\ \LARGE{}8x - \cancel{8} \times \frac{5}{\cancel{2}} \\ \\ \LARGE{}8x - 4 \times 5 \\ \\ \LARGE{}8x - 20 \\ \\ \LARGE{}8x - 20 = 3x \\ \\ \LARGE{}8x = 3x + 20 \\ \LARGE{}8x - 3x = 20 \\ \LARGE{}5x = 20 \\ \\ \LARGE{}x = \frac{20}{5} \\ \\ \LARGE\boxed{x = 4}$

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