Question

10/6-2/5+3/4
5/9+3/4+2/5-1/3
4/6+3/2-5/7
7/3-2/9+7/5

Answer 1

Oi...

a) 10/6 - 2/5 + 3/4

5/3 - 2/5 + 3/4 ⇒o mmc de (3,5,4)=60

100 - 24 + 45/60

121/60

b) 5/9 + 3/4 + 2/5 - 1/3 ⇒ o mmc de ( 9,4,5,3) = 180

100 + 135 + 72 - 60/180

247/180

c) 4/6 + 3/2 - 5/7

2/3 + 3/2 - 5/7 ⇒o mmc de ( 3,2,7) = 42

28 + 63 - 30/42

61/42

d) 7/3 - 2/9 + 7/5⇒o mmc de (3,9,5) = 45

105 - 10 + 63/45

158/45

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