Question

a)2/7+1/3 =
b)5/12-2/8=
c)1/2+4/5=
d)2/3+3/5=
e)3/5+6/7+5/7+8/3=
alguém consegue me ajudar?
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Answer 1

Explicação passo-a-passo:

a) 2/7 + 1/3 =

6/21 ÷ 7/21 = 13 /21

b) 5/12 - 2/8 =

10/24 - 6/24 = 4/24 = 1/6

c) 1/2 + 4/5 =

5/10 + 8/10 = 13/10

d) 2/3 + 3/5 =

10/15 + 9/15 = 19/15

e) 3/5 + 6/7 + 5/7 + 8/3 =

63/ 105 + 90/105 + 75/105 + 280/105 = 508/105