Question

-1,25+5/12÷(2,5×1/3-7/8=

Answer 1

Ответ:

$- 1.25 + \frac{5}{2} \div ( \frac{5}{6} - \frac{7}{8} ) \\ -1. 25 - \frac{5}{12} \times 24 \\ - 1.25 - 10 = - 11.25$

Пошаговое объяснение:

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Answer 2

Let's break down the expression step by step:

1. First, we'll simplify the expressions within the parentheses:

   2.5 × (1/3) = 5/3 7/8

2. Now, subtract 7/8 from 5/3:

   (5/3) - (7/8)

To subtract these fractions, we need to find a common denominator, which is 24. So, we'll convert both fractions to have a denominator of 24:

(5/3) * (8/8) - (7/8) * (3/3) = (40/24) - (21/24)

3. Subtract the fractions:

   (40/24) - (21/24) = (40 - 21) / 24 = 19/24

Now, we have the simplified expression:

-1.25 + 5/12 ÷ 19/24

4. Next, let's perform the division:

   (5/12) ÷ (19/24)

To divide fractions, we'll multiply by the reciprocal of the divisor:

(5/12) * (24/19)

Now, multiply the fractions:

(5/12) * (24/19) = (5 * 24) / (12 * 19) = 120/228

5. Finally, let's simplify the fraction:

   120/228 can be simplified by finding the greatest common divisor (GCD) of 120 and 228, which is 12:

   (120/12) / (228/12) = 10/19

So, the final result of the expression is:

-1.25 + 10/19