Question

ME AJUDEM POR FAVOR

Calcule o valor das operações
a) (+2/3) + (-3/4) + (+2/5)
b) (+4/5) + (-2/3) + (-1/2)
c) (-2/3) - ( +1/4) - (-2/5)
d) (+2/8) - (-1/2) - (+2/4)

Answer 1

Oi

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

2/3 – 3/4 + 2/5

40-45+24 /60

19/60

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

4/5 – 2/3 –  1/2

24-20-15/30

- 11/30

 

 (-2/3) - ( +1/4) - (-2/5)

- 2/3 – 1/4 + 2/5

-40-15+24/60

  - 31/60

  

      

 (+2/8) - (-1/2) - (+2/4)

2/8 + 1/2 – 2/4

2 + 4 – 4/8

2/8 : 2

1/2

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