Question

Efetue as frações: A) 1/3 + 5/2= ? b)4/7 - 8/10= ? C) 2/5 + 3/6= ? d)6/7 + 9/7= ? e) 3/10 + 4/2= ? f) 4/9 - 8/6= ?

Answer 1

A)1/3+5/2= (2+15)/6= + 17/6

B)4/7-8/10=(40-56)/70= - 16/70

C)2/5+3/6= (12+15)/30= +27/30= +9/10

D)6/7+9/7= +15/7

E)3/10+4/2=(3+20)/10= +23/10

F)4/9-8/6= (8-24)/18= -16/18= -8/9