Question

el integrador de matemática me ayudan?​

Answer 1

Explicación paso a paso:

$\frac{8}{x - 7} = \frac{x + 7}{4}$

$(x - 7)(x + 7) = 8 \times 4$

${x}^{2} - 49 = 32$

${x}^{2} = 32 + 49$

${x}^{2} = 81$

$x = 9$

$\frac{x + 2}{x - 3} = \frac{x + 1}{x - 1}$

$(x + 2)(x - 1) = (x - 3)(x + 1)$

${x}^{2} - x - 2 = {x}^{2} - 2x - 3$

$2x - x = - 3 + 2$

$x = - 1$