Question

32)calcule a)-3+7+4= b)1+(-4)+(-6) g)3/4+(-1/2)+(-2/5) h)2+3+(-3/4)

Answer 1

Olá....

a)

- 3 + 7 + 4

- 3 + 11

8

b)

1 + (- 4) + (- 6)

1 - 4 - 6

- 9

g)

3/4 + (- 1/2) + (- 2/5)

3/4 - 1/2 - 2/5⇒mmc = 20

15 - 10 - 8/20

15 - 18/20

- 3/20

h)

2 + 3 + (- 3/4)

5 + 3/4⇒mmc = 4

20 - 3/4

17/4

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