Question

(8//(X-7))=(7//(X-8))

Answer 1

$frac{8}{x-7}=frac{7}{x-8}$
$8(x-8)=7(x-7)$
$8x-64=7x-49$
$8x-7x=64-49$
$x=15$

$frac{8}{15-7}=frac{8}{8}=1$
$frac{7}{15-8}=frac{7}{7}=1$
ответ: 15