Question

Efetue:

1/5-5/12+1/3-1/4=

2/3+1/7-8/5=

3/7+8/5=

82,76·3,8=

0,625÷0,005=

45,687+395,7=

9,005-6,25=

Answer 1

Olá....

Efetue:  

a)

1/5 - 5/12 + 1/3 - 1/4==>mmc = 60

12 - 25 + 20 - 15/60

32 - 40/60

- 8/60 ÷ 4

- 2/15

b)

2/3 + 1/7 - 8/5==>mmc = 105

70 + 15 - 168/105

85 - 168/105

-83/105

c)

3/7 + 8/5==>mmc = 35

15 + 56/35

71/35

d)

82,76 × 3,8

     82,76

 x      3,8

  314,488

e)

0,625 ÷ 0,005

125

f)

45,687 + 395,7

      45,687

 + 395,7    

    441,387

g)

9,005 - 6,25

  9,005

-  6,25  

  2,755

Bons estudos.