Question

calcule o valor da expressões numéricas

1/7 + 6/7 =

2/5 - 1/5 =

7/12 + 3/12=

1/2 - 81/2=

9/3 + 1/4=

3/9 + 1/4 =

-3/2 + 1/10=

Answer 1

7/7
1/5
10/12
-80/2
13/4
7/12
-7/5

Answer 2

Olá...

a)

1/7 + 6/7

7/7

1

b)

2/5 - 1/ 5

1/5

c)

7/12 + 3/12

10/12 ÷ 2

5/6

d)

1/2 - 81/2

- 80/2 ÷ 2

- 40

e)

9/3 + 1/4⇒o mmc de (3,4) = 12

36 + 3/12

39/12 ÷ 3

13/4

f)

3/9 + 1/4

1/3 + 1/4 ⇒o mmc de (3,4) = 12

4 +- 3 /12

7/12

g)

- 3/2 + 1 / 10 ⇒o mmc de (2,10) = 10

- 15 + 1/10

- 14/10 ÷ 2

- 7/5

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