Question

Calcule e simplifique o resultado se possivel
a) 7/12 + 4/12
b) 9/13 - 2/13
c) 7/10 + 2/7
d) 5/8 - 1/7

Answer 1

resolução!

A ) 7/12 + 4/12 = 11/12

B ) 9/13 - 2/13 = 7/13

C )

7/10 + 2/7 _____ MMC = 70

49 + 20/70

69/70

D )

5/8 - 1/7 _______ MMC = 56

35 - 8/56

27/56