Question

ecuaciónes lineales, son 2

a–(5–2a)=7(a–1)–2​

Answer 1

Explicación paso a paso:

$a - (5 - 2a) = 7(a - 1) - 2 \\ a - 5 + 2a = 7a - 7 - 2 \\ a + 2a - 7a = - 7 - 2 + 5 \\ - 4a = - 4 \\ a = \frac{ - 4}{ - 4} \\ a = 1$

$\frac{3}{4} a - 4= \frac{1}{4} a - 2 \\ \frac{3}{4} a - \frac{1}{4} a = - 2 + 4 \\ \frac{2}{4} a = 2 \\ 2a = 2(4) \\ 2a = 8 \\ a = \frac{8}{2} \\ a = 4$