Question

1)Calcule as operaçoes: TUDO PFV

a)7/3+2/10=

b)5/3-2/5=

c)2 3/5+3 1/6=

d)5 3/7-2 4/5=

e)6/9.18/24=

f)5/10:15/30

g)3 5/6.2 1/7=

h)8 3/4:4 8/10=

Answer 1

Oi...

Resolução:

a)

7/3 + 2/10

7/3 + 1/5 ⇒mmc 3, 5 = 15

35 + 3/15

38/15

b)

5/3 - 2/5 ⇒mmc 3, 5 = 15

25 - 6/15

19/15

c)

2 3/5 + 3 1/6

13/5 + 19/6⇒mmc 5, 6 = 30

78 + 95/30

173/30

d)

5 3/7 - 2 4/5

38/7 - 14/5⇒mmc 7, 5  = 35

190 - 98/35

92/35

e)

6/9 × 18/24

108/216 ÷ 108

1/2

f)

5/10 ÷ 15/30

1/2 × 30/15

1/2 × 2

1

g)

3 5/6 × 2 1/7=

23/6 × 15/7

345/42 ÷ 3

115/14

h)

8 3/4 ÷ 4 8/10

35/4 ÷ 48/10

35/4 ÷ 24/5

35/4 × 5/24

175/96

Bons estudos.