Question

4*（1/2у+6）=8*（3/10+12）пж срочно прошу

Answer 1

$4 *( \frac{1}{2}y+6)=8*( \frac{3}{10} +12) \\ \\ 4* \frac{1}{2}y + 4*6 = 8 * 12 \frac{3}{10} \\ \\ 2y + 24 = \frac{8}{1} * \frac{123}{10} \\ \\ 2y + 24 = \frac{984}{10} \\ \\ 2y = 98 \frac{4}{10} -24 \\ \\ 2y= 74 \frac{4}{10} \\ \\ y = \frac{744}{10} :2 = \frac{372}{5} * \frac{1}{2} = \frac{186}{5} \\ \\ y= 37 \frac{1}{5}$

Проверим:
$4 *( \frac{1}{2}*37 \frac{1}{5} +6)=8*( \frac{3}{10} +12) \\ \\ 4 * ( \frac{1}{2} * \frac{186}{5} +6) = \frac{8}{1} * \frac{123}{10} \\ \\ 4 *( \frac{93}{5} + \frac{30}{5} ) = \frac{4*123}{1*5} \\ \\ \frac{4}{1} * \frac{123}{5} = \frac{492}{5} \\ \\ 98 \frac{2}{5} =98 \frac{2}{5}$