Question

Вычислите: 1) 7 14/15 + 2 1/15 2) 9 24/27 + 12 13/27 3) 1- 12/19 4) 8 - 3 6/15

Answer 1

7  14/15 + 2 1/15 = 9  15/15 = 10
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9  24 / 27  + 12  13/27 = 21  37/27 = 22  10/27
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1  -12/19 = 19/19 - 12/19  = 7 /19
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8 - 3  6/15 = 7  15/15 - 3  6/15 = 4  9/15 = 4  3/5 

Answer 2

Sure! Let's calculate each of the expressions step by step:

1) 7 + 14/15 + 2 + 1/15 To add fractions, we need to find a common denominator. In this case, the common denominator is 15. So we have: 7 + (14/15) + 2 + (1/15) = 7 + 2 + (14/15) + (1/15) = 9 + (15/15) = 9 + 1 = 10

Therefore, the result of the first expression is 10.

2) 9 + 24/27 + 12 + 13/27 Similarly, we need to find a common denominator for the fractions. The common denominator here is 27. So we have: 9 + (24/27) + 12 + (13/27) = 9 + 12 + (24/27) + (13/27) = 21 + (24/27) + (13/27) = (21 + 24 + 13)/27 = 58/27

Therefore, the result of the second expression is 58/27.

3) 1 - 12/19 To subtract fractions, we also need a common denominator. In this case, the common denominator is 19. So we have: 1 - (12/19) = (19/19) - (12/19) = (19 - 12)/19 = 7/19

Therefore, the result of the third expression is 7/19.

4) 8 - 3 + 6/15 We can simplify this expression by first adding the whole numbers and then dealing with the fraction: 8 - 3 + (6/15) = 5 + (6/15) = 5 + (2/5) = (5*5 + 2)/5 = 27/5

Therefore, the result of the fourth expression is 27/5.

To summarize: 1) 7 + 14/15 + 2 + 1/15 = 10 2) 9 + 24/27 + 12 + 13/27 = 58/27 3) 1 - 12/19 = 7/19 4) 8 - 3 + 6/15 = 27/5