Question

01) Efetue as adições e as subtrações
a) -7x+ 8x =
b) 10x+ 20x=
c) -20y -30y -29y=
d) -80x + 90x =
e) 100x - 200x =​

Answer 1

Resposta:

a) -7x+ 8x = 1x

b) 10x+ 20x= 30x

c) -20y -30y -29y= - 79x

d) -80x + 90x = 10x

e) 100x - 200x = - 100x

Answer 2

Resposta:

a) 1x b)30x c)79x d) 10x e) 100x