Question

Resolva as frações (MMC):
a) 5/6 + 7/15
b) 4/18 + 3/4 + 1/2
c) 11/10 + 13/20 + 5/4
d) 8/9 + 7/10 + 4/5
e) 3/40 + 5/8
f) 5/9 + 4/6 + 1/3
g) 3/10 + 5/8 + 3/9
h) 1/2 + 1/4 + 7/12
URGENTE PRA HOJE

Answer 1

Vamos lá...

a)

5/6 + 7/15  ⇒ mmc = 30

25 +14/30

39/30 ÷ 3

13/10

b)

4/18 + 3/4 + 1/2

2/9 + 3/4 + 1/2 ⇒mmc = 36

8 + 27 + 18/36

53/36

c)

11/10 + 13/20 + 5/4 ⇒mmc =20

22 + 13 + 25/20

60/20

3

d)

8/9 + 7/10 + 4/5⇒mmc = 90

80 + 63 + 72/90

215/90 ÷ 5

43/18

e)

3/40 + 5/8 ⇒mmc = 40

3 + 25/40

28/40 ÷ 4

7/10

f)

5/9 + 4/6 + 1/3  

5/9 + 2/3 + 1/3

5/9 + 2 + 1/3

5/9 + 3/3

5/9 + 1⇒mmc = 9

5 + 9/9

14/9

g)

3/10 + 5/8 + 3/9

3/10 + 5/8 + 1/3⇒mmc = 120

36 + 75 + 40/120

151/120

h)

1/2 + 1/4 + 7/12⇒mmc = 12

6 + 3 + 7/12

16/12 ÷ 4

4/3

Espero ter ajudado.