Question

-123,6-(-8,9-х)=7,1.

Answer 1

-123,6-(-8,9-х)=7,1

-8,9-х=7,1+123,6

-8,9-х=130,7

х=130,7-8,9

х=121,8

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Проверка:

-123,6-(-8,9-121,8)=-123,6-(-130,7)=7,1

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Ответ: х — равен 121,8

Answer 2

To solve the equation -123.6 - (-8.9 - x) = 7.1, you can follow these steps:

1. First, distribute the negative sign inside the parentheses on the left side of the equation:

-123.6 + 8.9 + x = 7.1

2. Next, combine the constants on the left side of the equation:

-123.6 + 8.9 = -114.7

So the equation becomes:

-114.7 + x = 7.1

3. Now, isolate x by adding 114.7 to both sides of the equation:

x = 7.1 + 114.7

4. Calculate the sum on the right side:

x = 121.8

So, the solution to the equation is:

x = 121.8