Question

(4,5 × 2/9 -4/7):3цэлых 1/2

Answer 1

$=(\frac{9}{2}*\frac{2}{9}-\frac{4}{7}):3\frac{1}{2}=(1-\frac{4}{7}):\frac{7}{2}=\frac{3}{7}*\frac{2}{7}=\frac{6}{49}$

Answer 2

Let's solve the expression step by step:

Step 1: Calculate the first part of the expression: (4,5 × 2/9 - 4/7) Convert the mixed number 4,5 to an improper fraction: 4,5 = 4 + 1/2 = 9/2 Now the expression becomes: (9/2 × 2/9 - 4/7)

Step 2: Perform the multiplication and subtraction: (9/2 × 2/9) = (9 * 2) / (2 * 9) = 18 / 18 = 1

Now the expression becomes: (1 - 4/7)

Step 3: Perform the subtraction: (1 - 4/7) = (7/7 - 4/7) = 3/7

Now the expression becomes: 3/7

Step 4: Divide by 3 цэлых 1/2 Convert 3 цэлых 1/2 to an improper fraction: 3 цэлых = 3 * 1 = 3, and 3/2 = 1 1/2, so 3 цэлых 1/2 = 3 + 1/2 = 7/2

Now divide 3/7 by 7/2: (3/7) ÷ (7/2) = (3/7) × (2/7) = (3 * 2) / (7 * 7) = 6 / 49

The final result is 6/49, which can also be simplified to 3/25.