Question

calcule o valor das expressões
a)1/2-(-3/5)+7/10
b) -2-(-1/2)-1/8
c) 5/12+(-1/4)-(+1/6)
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Answer 1

Olá...

Calcule o valor das expressões:

a)

1/2 - (- 3/5) + 7/10

1/2 + 3/5 - 7/10⇒mmc = 10

5 + 6 +7/10

18/10 ÷ 2

9/5

b)

- 2 - (- 1/2) - 1/8

- 2 + 1/2 - 1/8⇒mmc =8

- 16 + 4 - 1/8

- 13/8

c)

5/12 + (- 1/4) - (+ 1/6)

5/12 - 1/4 - 1/6⇒ mmc = 12

5 - 3 - 2/12

5 - 5/12

0/12

0

Bons estudos.