Question

Exercícios
1) Efetue as adições e subtrações dos números racionais:

a) 4/9 - 2/3= b)3/4 +7/8= c)4/10 - 1/5=
d)7/5 - 5/3= e)3/7+ 8/7= f)7/4 - 2/4=
g)9/2+5/2-7/2= h)2/3+5/6 -1/2=
i)4/9- 5/6- 2/3+3/2=
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Answer 1

A) -2/9
B) 13/8
C) 2/10
D)-4/15
E) 11/7
F) 5/4
G) 7/2
H) 11/6
I) 16/9