Question

Essas questões (D). (E). (F)

Answer 1

d)-4/9 + 1/6 = 
m.m.c = 18
-8/18 + 3/18 = -5/18
e)1/4 - (-1/8) = 
1/4 + 1/8 = 
m.m.c= 8
2/8 + 1/8 = 3/8

f)-2/3 . 3/2 = -6/6 = -1