Question

Efetue as adições e substituições a seguir em seu caderno.
A)4/7+2/7
B)8/5-3/5
C)3/10+1/4
D)4/5-2/3
E)5/8-1/4
F)¹ 1/4+² 1/6
G)¹ 3/10-8/9
H)3/25+2/5
I)3/4+(4/5-3/10)
Já)5/8-3/8-1/8
Preciso dessa resposta pra hoje, por favor me ajudem...

Answer 1

A)4/7+2/7 = 6/7

B)8/5-3/5= 5/5 = 1

C)3/10+1/4  mmc= 20
6/20 + 5/20 = 11/20

D)4/5-2/3   mmc=15
12/15 -10/15 = 2/15

E)5/8-1/4 mmc=8
5/8 - 2/8 = 3/8

F)¹ 1/4+² 1/6
1/16 +1/16 = 2/16 simplificando por 2 = 1/16

G)¹ 3/10-8/9  mmc=90
27/90 - 80/90 = - 53/90

H)3/25+2/5  mmc=25
3/25 +10/25 = 13/25

I)3/4+(4/5-3/10)   mmc 10     8/10 - 3/10 = 5/10 = 1/2
3/4 + 1/2   mmc= 4   3/4 + 2/4 = 5/4
5/4

Já)5/8-3/8-1/8
1/8