Question

a)
$\frac{5}{2} + \frac{15}{16} =$
b)
$\frac{8}{3} + \frac{2}{7} =$
c)
$\frac{15}{4} + \frac{2}{7} =$
d)
$\frac{7}{9} + \frac{2}{3} =$
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Answer 1

Oi...

Resolução:

a)

5/2 + 15/16 ⇒mmc de 2, 16 = 16

40 + 15/16

55/16

b)

8/3 + 2/7⇒mmc de (3,7) = 21

56 + 6/21

62/51

c)

15/4 + 2/7⇒mmc de (4, 7) = 28

105 + 8/28

113/28

d)

7/9 + 2/3⇒mmc de (9, 3) = 9

7 + 6/9

13/9

Bons estudos.