Question

МНОГО БАЛЛОВ, ПРОСТОЕ ЗАДАНИЕ

Answer 1

$frac{3x+11}{5}= frac{5x-7}{15}$
$frac{1}{5}*(3x+11)= frac{1}{5} *frac{5x-7}{3}$
$3x+11= frac{5x-7}{3}$
$3x+11= frac{5x-7}{3}|*3$
$3(3x+11)= 5x-7$
$9x+33= 5x-7$
$9x-5x= -7-33$
$4x=-40$
$x=-10$

Ответ: -10