Question

Решите уравнение 2 1/7 +y =- 2 1/7

Answer 1

$2 \frac{1}{7}+y=-2 \frac{1}{7}$
$\frac{15}{7}+y=- \frac{15}{7}$
$y=- \frac{15}{7} - \frac{15}{7}$
$y=- \frac{30}{7}$
$y=-4 \frac{2}{7}$

Answer 2

$2 \frac{1}{7} = \frac{15}{7}$
$y= - \frac{15}{7} - \frac{15}{7}$
$y = - \frac{30}{7}$
$y = -4 \frac{2}{7}$