Question

8 5/7 + 3,15+1 2/7 + 4,25 выполните действие

Answer 1

8 5/7 + 1 2/7 + 3,15 + 4,25 = 61/7 + 9/7 + 7,4 = 70/7 + 7,4 = 10 + 7,4 = 17,4

Answer 2

To perform the addition, let's first convert all the numbers to fractions. Then, we'll add them together:

Step 1: Convert mixed numbers to improper fractions. 8 5/7 = (7 * 8 + 5)/7 = 61/7 1 2/7 = (7 * 1 + 2)/7 = 9/7

Step 2: Add the fractions. 8 5/7 + 3.15 + 1 2/7 + 4.25 = 61/7 + 3.15 + 9/7 + 4.25

Step 3: Convert the decimal number to a fraction. 3.15 = 3 + 0.15 = 3 + 15/100 = 3 + 3/20 = 63/20

Step 4: Add all the fractions together. 61/7 + 63/20 + 9/7 + 4.25

Step 5: Find a common denominator for the fractions (7 * 20 = 140).

(61/7) * (20/20) = 1220/140 (63/20) * (7/7) = 441/140 (9/7) * (20/20) = 180/140

Now the expression becomes:

(1220/140) + (441/140) + (180/140) + 4.25

Step 6: Add the fractions and the decimal together:

(1220 + 441 + 180)/140 + 4.25

Step 7: Combine the numerators:

(1841)/140 + 4.25

Step 8: Add the whole numbers and fractions:

13 1/140 + 4.25

Since 1/140 is a very small fraction, the final result is approximately:

13.0089 + 4.25 ≈ 17.2589

So, the result of the given expression is approximately 17.2589.