Question

Resolva :
a) 1/5 + 3/5 =
b) 3/4 + 2/6 =
c) 15/8 - 10/12=
d) 10/32 + 15/24 =

Answer 1

a) 1/5 + 3/5 = 4/5

b) 3/4 + 2/6 = 3/12 + 2/12 = 5/12

4,6 | 2
2,3 | 2
1,3 | 3
1,1 | 12

c) 15/8 - 10/12 = 15/40 - 10/40 = 5/40

8,10 | 2
4,5 | 2
2,5 | 2
1,5 | 5
1,1 | 40

d) 10/32 + 15/24 = 10/96 + 15/96 = 25/96

32,24 | 2
16,12 | 2
8, 6 | 2
4,3 | 2
2,3 | 2
1,3 | 3
1,1 | 96

Answer 2

Olá, bom dia ☺

Resoluções;

a)

1/5 + 3/5 = (1+3)/5=4/5.

b)

3/4 + 2/6

m.m.c.(4,6)=12

(9+4)/12=13/12.

c)

15/8 - 10/12

m.m.c.(8,12)=24

(45-20)/24=25/24.

d)

10/32 + 15/24

m.m.c.(24,32)=96

(30+60)/96=90/96 : 6/6=15/16.

Bons estudos :)