Question

Efetue as opereçoes e apresente na forma simplificada :
A)3/13 + 5/13 B)11/5 - 2/15 C)1/3 +1 quarto D) 5/7 x 3/5 E)2/5 X 2/5 F) 3/8 : 2/5 G) 7/10 : 3 ME AJUDE POR FAVOOOR 

Answer 1

A) 3/13 + 5/13 = 3 + 5 = 8/13
                             13

B) 11/5 - 2/15 = 33 - 2 = 31/15
                             15

C) 1/3 + 1/4 = 4 + 3 = 7/12
                         12

D) 5/7 x 3/5 = 15/35 simplificando por 5 temos

3/7

E) 2/5 x 2/5 = 4/25


F) 3/8 : 2/5 = 3/8 . 5/2 = 15/16


G) 7/10 : 3 = 7/10 . 1/3 = 7/30

Answer 2

3/13 + 5/13 =  8/13
11/5 -2/25 = 31/15
1/3+ 1/4 = 7/12
5/7 x 3/5 = 15/35 = 3/7 simplifiquei por 5
2/5 x 2/5 = 4/25
3/8 :2/5 =
3/8 x 5/2 = 15/16
7/10 x 1/3 = 7/30