Question

1) Calcular soma e subtração de frações, e reduza a fração irredutível:

A) 1/4 + 3/5 + 3/2 =

B) 2/7 + 3/14 + 5/21 =

C) 4/5 + 1/7 + 3/7 =

D) 2/5 + 3/6 - 3/15 =

E) 7/6 + 5/12 - 3/4 =

F) 6/8 + 3/4 - 4/12 =

G) 4/7 + 1/3 - 2/21 =

Preciso dos Cálculos Pfvr
Dou 20 pontos 
É PARA AMANHÃ !!!!

Answer 1

a) 1/4 + 3/5 + 3/2 ---- (5 + 12 + 30)/20 -----37/20

b) 2/7 + 3/14 + 5/21 ----- (12 + 9 + 10)42 ------ 31/42

c) 4/5 + 1/7 + 3/7 ------ (28 + 5 + 15)/35 -------48/35

d) 2/5 +3/6 - 3/15 ----- (12 + 15 - 6)/30 -------21/30 -----7/10

e) 7/6 + 5/12 - 3/4 ----- (14 + 5 - 9)/12 ---- 10/12 ----5/6

f) 6/8 + 3/4 - 4/12 -------- (18 + 18 - 8)/24 ----- 28/24 ----- 14/12 ----- 7/6

g) 4/7 + 1/3 - 2/21 ------ (12 + 7 - 2)/21 -----17/21