Question

(7-1 1/2*2 2/5)÷2 4/5​

Answer 1

Ответ:

2,32 если переводить в десятичных

Объяснение:

Answer 2

To simplify the given expression, let's break it down step by step:

1. Start by simplifying the expression within the parentheses: 7 - 1 1/2 * 2 2/5. To simplify the mixed numbers, convert them to improper fractions: 7 - 1 1/2 * 2 2/5 = 7 - (3/2) * (12/5).

2. Multiply the fractions: (3/2) * (12/5) = (36/10). Now the expression becomes: 7 - (36/10).

3. Simplify the subtraction: 7 - (36/10) = 70/10 - 36/10. Since the denominators are the same, we can subtract the numerators: 70/10 - 36/10 = (70 - 36)/10 = 34/10.

4. Divide the result by 2 4/5: (34/10) ÷ (2 4/5). Convert the mixed number to an improper fraction: 2 4/5 = (2*5 + 4)/5 = 14/5. Now the expression becomes: (34/10) ÷ (14/5).

5. To divide fractions, we multiply by the reciprocal of the divisor: (34/10) ÷ (14/5) = (34/10) * (5/14).

6. Multiply the fractions: (34/10) * (5/14) = (170/140). Simplify the fraction: (170/140) = (17/14).

Therefore, the final result is 17/14.