Question

1) 2/3 + 1/5 + 5/9 + 1/15
1) 3/4 + 2/3 - (5/6-1/5) +7/10 - 2/15
EXPLICA EM BAIXO O RACIOCINIO PFV E PRA AMANHA

Answer 1

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1)

2/3 + 1/5 + 5/9 + 1/15

Divisor Comum = 45

30/45 + 9/45 + 25/45 + 3/45

30 + 9 + 25 + 3 / 45

39 + 28/45

67/45

R) 67/45

_

2)

3/4 + 2/3 - (5/6 - 1/5) + 7/10 - 2/15

3/4 + 2/3 - ( 25/30 - 6/30) + 7/10 - 2/15

3/4 + 2/3 - 19/30 + 7/10 - 2/15

9/12 + 8/12 - 19/30 + 7/10 - 2/15

17/12 - 19/30 + 7/10 - 2/15

85/60 - 38/60 + 7/10 - 2/15

47/60 + 7/10 - 2/15

47/60 + 42/60 - 8/60

89/60 - 8/60

81/60

27/20

R) 27/20

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• Desculpa ter ficado grande

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