Question

3 3/4 x 2/5 - 3 6/25 х 5/27 решайте срочно

Answer 1

15/4×2/5-81/25×5/27=3/2-3/5=9/5=1 4/5

Answer 2

To solve the expression, we'll follow the order of operations (PEMDAS/BODMAS):

1. Perform the multiplication and division operations from left to right.
2. Perform the addition and subtraction operations from left to right.

Let's solve the expression step by step:

Step 1: 3 3/4 x 2/5 = (3 + 3/4) x 2/5 = (12/4 + 3/4) x 2/5 = (15/4) x 2/5 = 30/20 = 3/2

Step 2: 3 6/25 x 5/27 = (3 + 6/25) x 5/27 = (75/25 + 6/25) x 5/27 = (81/25) x 5/27 = 405/675 = 27/45 = 3/5

Now, the expression becomes: 3/2 - 3/5

Step 3: To subtract fractions, they need a common denominator. The common denominator for 2 and 5 is 10. So:

3/2 = (3/2) * (5/5) = 15/10 3/5 = (3/5) * (2/2) = 6/10

Now, the expression becomes: 15/10 - 6/10

Step 4: Subtract the fractions:

15/10 - 6/10 = (15 - 6)/10 = 9/10

So, the final result is 9/10.