Question

10,8•(-4/9)+21,21:3-7целых3/5

Answer 1

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Answer 2

Let's solve the expression step by step:

1. 10,8 • (-4/9): To multiply a decimal number by a fraction, multiply the decimal by the numerator of the fraction and then divide by the denominator.

10.8 • (-4/9) = (10.8 * -4) / 9 = -43.2 / 9 ≈ -4.8

2. 21,21 : 3: To divide a decimal number by an integer, simply perform the division.

21.21 / 3 ≈ 7.07

3. 7 целых 3/5: This is a mixed number, which means 7 whole units and 3/5 as the fractional part.

Now, let's put it all together:

-4.8 + 7.07 - 7 целых 3/5

To add and subtract the mixed number, we need to convert it to a decimal.

7 целых 3/5 = 7 + 3/5 = 7 + 0.6 = 7.6

Now, the expression becomes:

-4.8 + 7.07 - 7.6

Now, add the numbers:

-4.8 + 7.07 - 7.6 ≈ -5.33

So, the result of the expression is approximately -5.33.