Question

-4х7-27:(-9)(2/9-1/7)0,63

Answer 1

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Answer 2

To simplify the expression, let's break it down step by step:

First, let's simplify the expression within the parentheses: 2/9 - 1/7

To subtract fractions, we need a common denominator. The least common multiple of 9 and 7 is 63.

Converting 2/9 to have a denominator of 63: (2/9) * (7/7) = 14/63

Converting 1/7 to have a denominator of 63: (1/7) * (9/9) = 9/63

Now, we can subtract the fractions: (14/63) - (9/63) = 5/63

Now, let's simplify the rest of the expression: -4 * 7 - 27 / (-9) * (5/63) * 0.63

Multiplying -4 and 7: -28 - 27 / (-9) * (5/63) * 0.63

Performing the division: -28 - (-3) * (5/63) * 0.63

Simplifying further: -28 + 3 * (5/63) * 0.63

Multiplying 3, 5/63, and 0.63: -28 + (3 * 5 * 0.63) / 63

Simplifying the multiplication: -28 + (9.45) / 63

Performing the division: -28 + 0.15

Finally, adding -28 and 0.15: -27.85

Therefore, the simplified expression is -27.85.