Question

Resultado de :(7ab2-3a+5b)+(-2ab2+a-b)

Answer 1

(7ab²-3a+5b)+(-2ab²+a-b) =
 7ab² -3a +5b -2ab² +a -b =
 7ab² -2ab² -3a +a +5b -b =
 5ab² -2a +4b

Answer 2

Vamos lá :

(7ab²-3a+5b)+(-2ab² + a - b)

= 7ab² - 3a + 5b - 2ab² + a - b
= 7ab² - 2ab² - 3a + a + 5b - b
= 5ab² - 2a + 4b

Espero ter ajudado !!!