Question

57,4:4+1целая1/6:4целых 2/3-(2,7+5 целый 1/20)×0,8=

Answer 1

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Answer 2

To solve the expression, let's perform the operations step-by-step:

1. Convert mixed numbers to improper fractions: 1 целая 1/6 = 1 + 1/6 = 6/6 + 1/6 = 7/6 4 целых 2/3 = 4 + 2/3 = 12/3 + 2/3 = 14/3 5 целых 1/20 = 5 + 1/20 = 100/20 + 1/20 = 101/20

2. Perform the calculations inside the parentheses: 2,7 + 5 целых 1/20 = 2.7 + 101/20 = (2.7*20 + 101) / 20 = (54 + 101) / 20 = 155 / 20

3. Continue simplifying the expression: 57,4:4 + 7/6 : 14/3 - (155/20) * 0.8

4. Perform the division: 57.4 / 4 = 14.35

5. Perform the division of fractions: 7/6 ÷ 14/3 = 7/6 * 3/14 = (7 * 3) / (6 * 14) = 21 / 84 = 1 / 4

6. Continue simplifying the expression: 14.35 + 1/4 - (155/20) * 0.8

7. Perform the multiplication: 155/20 * 0.8 = (155 * 0.8) / 20 = 124 / 20 = 31/5

8. Continue simplifying the expression: 14.35 + 1/4 - 31/5

9. Find a common denominator for 1/4 and 31/5, which is 20: 1/4 = 5/20 31/5 = (31/5) * (4/4) = 124/20

10. Continue simplifying the expression: 14.35 + 5/20 - 124/20

11. Combine the fractions: 5/20 - 124/20 = -119/20

12. Add the fractions and decimals: 14.35 + (-119/20) = (14.35*20 - 119) / 20 = (287 - 119) / 20 = 168 / 20 = 8.4

So, the final result is 8.4.