Question

5a + 7b – 2a - 8b; (4x + 2) - 5; 20b - (b − 3) + (3b – 10)​

Answer 1

Ответ:

$5a + 7b - 2a - 8b = 3a - b$

$(4x + 2) - 5 = 4x + 2 - 5 = 4x - 3$

$20b - (b - 3) + (3b - 10) = 20b - b + 3 + 3b - 10 = 22b - 7$