Question

(9- 1 3/7*2 1/2):2 3/8=?

Answer 1

Ответ:

2 2/7

Пошаговое объяснение:

1) 1 3/7•2 ½=25/7=3 4/7

2) 9- 3 4/7= 8 7/7 - 3 4/7 = 5 3/7

3) 5 3/7: 2 3/8 = 16/7 = 2 2/7

Answer 2

To solve the expression (9 - 13/7 * 2 1/2) ÷ 2 3/8, let's break it down step by step:

Step 1: Convert the mixed numbers to improper fractions. 2 1/2 = (2 * 2 + 1) / 2 = 5/2 2 3/8 = (2 * 8 + 3) / 8 = 19/8

Step 2: Simplify the expression inside the parentheses. (9 - 13/7 * 5/2)

Step 3: Perform the multiplication inside the parentheses. (9 - (13/7) * (5/2)) = (9 - (65/14))

Step 4: Convert the division into multiplication by the reciprocal. (9 - (65/14)) ÷ (19/8) = (9 - (65/14)) * (8/19)

Step 5: Simplify the expression. (9 * 8 - (65/14) * 8) / 19 = (72 - (520/14)) / 19 = (72 - 37.142857142857146) / 19 = 34.857142857142854 / 19

Step 6: Divide the numerator by the denominator. 34.857142857142854 / 19 ≈ 1.834