Question

Efetue as operações com fraçõesA) -5/12 - 1/12B)1/7 -3/7 +5/7C)-2/9 + 3/9D)1/2+3/4-2/6E)-8/9-2/6F)7/12-3/8-6/4

Answer 1

Olá

a) - 5/12 - 1/12

- 6/12 ÷ 6

- 1/2

b) 1/7 - 3/7 + 5/7

1 - 3 + 5/7

3/7

c) - 2/9 + 3/9

1/9

d) 1/2 + 3/4 - 2/6==>0 mmc 2,4,6 = 12

6 + 9 - 4 /12

11/12

e) - 8/9 - 2/6 ==> o mmc 9,6 = 18

- 16 - 6 / 18

- 22/18 ÷ 2

- 11 / 9

f) 7/12 - 3/8 - 6/4==>o mmc 12,8,4 =24

14 - 9 - 36 / 24

- 31/24

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