Question

.......:C

..... por faaaa Resolución

Answer 1

Respuesta:

$x - 8 = 7x - 20 \\ 12 = 6x \\ 2 = x$

$m - 14 = 10m - 41 \\ 27 = 9x \\ 3 = x$

$7x - 13 = - 12 + 3x \\ 4x = 1 \\ x = \frac{1}{4}$

$(b + 5)(b + 2) = b(b + 3) - 2 \\ {b}^{2} + 7b + 10 = {b}^{2} + 3b - 2 \\ 4b = - 12 \\ b = - 3$

$a(a + 8) + 47 = (a + 7)(a + 6) \\ {a}^{2} + 8a + 47 = {a}^{2} + 13a + 42 \\ 5 = 5x \\ 1 = x$