Question

Exercícios propostos sobre soma
de frações
a) 1/2 + 4/5 =
b)2/3+7/3=
c) 5/6+ 1/2 =
d) 9/5+ 3/4 =
e) 3/5 + 8/5 =
f) 1/3 + 3/2=
g) 23/9 + 30/3 =
h) 2/3 + 3/5 =
​

Answer 1

Olá...

a)

1/2 + 4/5 =mmc = 10

5 + 8/10

13/10

b)

2/3 + 7/3 = mmc = 3

2 + 7/3

9/3

3

c)

5/6 + 1/2 =  mmc = 6

5 + 3/6

8/6 ÷ 2

4/3

d)

9/5 + 3/4 =  mmc = 20

36 + 15/30

51/20

e)

3/5 + 8/5 =  mmc = 5

3 + 8/5

11/5

f)

1/3 + 3/2 = mmc = 6

2 + 9/6

11/6

g)

23/9 + 30/3 =  

23/9 + 10⇒mmc = 9

23 + 90/9

113/9

h)

2/3 + 3/5 = mmc = 15

10 + 9/15

19/15

Espero ter ajudado.