Question

resolva
a)5/7 - 1/2
b)1/10 + 5/2 +9/4
c)13/8 + 15/4
d)5/2 - 1/4

Answer 1

A)5/7 - 1/2

= 5/7 + -1/2

= 10/14 + -7/14

= 10 + -7 / 14

= 3/14

B)1/10 + 5/2 + 9/4

= 13/5 + 9/4

= 97/20

C)13/8 + 15/4

= 13/8 + 30/8

= 13 + 30 / 8

= 43/8

D)5/2 - 1/4

= 5/2 + -1/4

= 10/4 + -1/4

= 10 + -1 / 4

= 9/4