Question

calcule as frações com denominadores diferentes

a) 3/2 + 2/3

b) 7/12 + 11/20

c) 3/2 - 2/3

d) 1/2 + 1/3

e) 3/2 - 1/4

f) 7/12 + 5/18

g) 5/4 - 2/3

h) 7/8 - 5/6

i) 1/2 - 1/5

j) 3/2 - 2/5

k) 4/9 + 5/6

l) 11/2 + 1/3

Answer 1

A13/6
B68/60
c)5/6
d)5/6