Question

(a+b-c)+(a-b+c)-[(a+b+c)]+(c-a+b). pfv me ajudeeeee

Answer 1

(a+b-c)+(a-b+c)-[(a+b+c)]+(c-a+b) = tirando dos parenteses

a + a -a -a = 2a - 2a = 0

b -b -b +b =  2b - 2b = 0

-c +c -c +c = -2c +2c = 0

resultado zero