Question

4. Reduza os termos semelhantes:

a) (+ 9x) + (-15x) =
b) (-8x) + (+11x) =
c) (+20y) + (-20y) =
d) (+24ax) + (-5ax) =

Answer 1

Resposta:

a) (+ 9x) + (-15x) = 9x - 15x = -6x

b) (-8x) + (+11x) = -8x + 11x = 3x

c) (+20y) + (-20y) = 20y - 20y = 0

d) (+24ax) + (-5ax) = 24ax - 5ax = 19ax