Question

(7/5 + 5/7) • 45 -1000 • (0,3 - 0,031).

Answer 1

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Answer 2

Let's solve the expression step by step:

1. Calculate the sum of fractions: (7/5 + 5/7) To add fractions, we need to find a common denominator, which in this case is 35. Then, we can add the fractions:

(7/5) + (5/7) = (49/35) + (25/35) = (49 + 25) / 35 = 74/35

2. Now, multiply the result by 45: (74/35) * 45 = (74 * 45) / 35 = 3330 / 35 = 95.14 (rounded to two decimal places)

3. Next, calculate the expression: 1000 * (0.3 - 0.031) = 1000 * 0.269 = 269

Finally, subtract the second result from the first result:

95.14 - 269 = -173.86

So, the final answer is approximately -173.86.