Question

Найди значения выражений : а) 3/5-1/4+1/3 б) 1/3-1/9+1/6 в) (2/3+1/9)-13/18 г) 3/4-1/2+7/8 д) 5/6-2/3+1/4 е)1/3-(1/9+1/6) Очень срочно

Answer 1

1) 3/5-1/4+1/3=41/60

3/5-1/4=12/20-5/20=7/20

7/20+1/3=21/60+20/60=41/60

2) (2/3+1/9)-13/18=1/18

2/3+1/9=6/9+1/9=7/9

7/9-13/18=14/18-13/18=1/18

3) 3/4-1/2+7/8=1. 1/8

3/4-1/2=3/4-2/4=1/4

1/4+7/8=2/8+7/8=9/8=1  1/8

4) 5/6-2/3+1/4=5/12

5/6-2/3=5/6-4/6=1/6

1/6+1/4=2/12+3/12=5/12

5) 1/3-(1/9+1/6)=1/18

1/9+1/6=2/18+3/18=5/18

1/3-5/18=6/18-5/18=1/18

Answer 2

Значения выражений:

а) 3/5 - 1/4 + 1/3

To find the value of this expression, we can perform the calculations step by step:

3/5 - 1/4 + 1/3 = (12/20) - (5/20) + (20/60) = 12/20 - 5/20 + 20/60 = (12 - 5 + 20)/60 = 27/60 = 9/20. б) 1/3 - 1/9 + 1/6

Similarly, we can calculate the value of this expression:

1/3 - 1/9 + 1/6 = (6/18) - (2/18) + (3/18) = 6/18 - 2/18 + 3/18 = (6 - 2 + 3)/18 = 7/18. в) (2/3 + 1/9) - 13/18

Let's calculate the value of this expression:

(2/3 + 1/9) - 13/18 = (6/9 + 1/9) - 13/18 = 7/9 - 13/18 = (14/18) - (13/18) = 1/18. г) 3/4 - 1/2 + 7/8

We can calculate the value of this expression as follows:

3/4 - 1/2 + 7/8 = (6/8) - (4/8) + (7/8) = 6/8 - 4/8 + 7/8 = (6 - 4 + 7)/8 = 9/8 = 1 1/8. д) 5/6 - 2/3 + 1/4

Let's calculate the value of this expression:

5/6 - 2/3 + 1/4 = (10/12) - (8/12) + (3/12) = 10/12 - 8/12 + 3/12 = (10 - 8 + 3)/12 = 5/12. е) 1/3 - (1/9 + 1/6)

To find the value of this expression, we need to simplify the expression inside the parentheses first:

1/3 - (1/9 + 1/6) = 1/3 - (2/18 + 3/18) = 1/3 - 5/18 = (6/18) - (5/18) = 1/18. Therefore, the values of the given expressions are: а) 9/20 б) 7/18 в) 1/18 г) 1 1/8 д) 5/12 е) 1/18