Question

resolva as operações com frações
a) 2/5+3/6+1/2 :

b) 2/3-1/5 :


C ) 3/6×1/4


d) 6/7÷2/3
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Answer 1

resolução!

A = 2/5 + 3/6 + 1/2 ____ MMC = 30

A = 12 + 15 + 15/30

A = 42/30

A = 7/5

B = 2/3 - 1/5 _____ MMC = 15

B = 10 - 3/15

B = 7/15

C = 3/6 x 1/4

C = 3/24

C = 1/8

D = 6/7 ÷ 2/3

D = 6/7 x 3/2

D = 18/14

D = 9/7