Question

Calcule:

-4/5-1/5+2/5=
-3/4+1/4-7/4=
-4/3-1/3-2/4=
1/7+2/7-17/7=
-2/3-1/4+2/6=
-2/5+1/10-7/10=

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Answer 1

Olá...

Calcule:

a)

- 4/5 - 1/5 + 2/5 ⇒mmc = 5

- 4 - 1 + 2/5

- 3/5

b)

- 3/4 + 1/4 - 7/4 ⇒ mmc = 4

- 3 + 1 - 7/4

- 9/4

c)

- 4/3 - 1/3 - 2/4

-4 - 1/3 - 1/2

- 5/3 - 1/2 ⇒mmc = 6

- 10 - 3/6

- 13/6

d)

1/7 + 2/7 - 17/7⇒mmc = 7

1 + 2 - 17/7

3 - 17/7

- 14/7

- 2

e)

- 2/3 - 1/4 + 2/6

- 2/3 - 1/4 + 1/3

- 2 + 1/3 - 1/4

- 1/3 - 1/4⇒mmc = 12

- 4 - 3/12

- 7/12

f)

- 2/5 + 1/10 - 7/10

- 2/5 + 1 - 7/10

- 2/5  - 6/10

- 2/5 - 3/5⇒mmc = 5

- 2 - 3/5

- 5/5

- 1

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