Question

Зделайте пж!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

$7x - 28 = 5x + 20 \\ 7x - 5x = 20 + 28 \\ 2x = 48 \\ x = 24 \\ 3y + 3 = 6 - 6y + 6 \\ 3y - 6y = 6 - 3 \\ - 3y = 3 \\ y = - 1 \\ \frac{9}{5}- \frac{6}{5} z = \frac{18}{5} - \frac{2}{5} z - 0.3z + 2.7 \\ - 1.2z +0.4z + 0.3z = 3.6 + 2.7 - 1.8 \\ - 0.5z = 5.3 \\ z = - 10.6$