Question

СРОЧНО ДАЮ 150 БАЛЛОВ)​

Answer 1

(4а+2в)/3=5

4а+2в=15

2в=15-4а

в=7.5-2а

Answer 2

$\frac{4a + 2b}{3} = 5$

$4a + 2b = 15$

$2b = 15 - 4a$

$b = \frac{15}{2} - 2a$

$b = 7.5 - 2a$