Question

15а-3в/3а+5в а=2;в=3

Answer 1

Ответ:

$\frac{15a - 3b}{3a + 5b} = \frac{15 \times 2 - 3 \times 3}{3 \times 2 + 5 \times 3} = \frac{30 - 9}{6 + 15} = \frac{21}{21} = 1$