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The sum of two numbers is -18. If the first number is 10, which equation represents this situation, and what is the second number?

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Answer:
= -28

Step by step solved:

Let's assume that the second number is represented by the variable "x".

The sum of the first number (10) and the second number (x) is -18. We can represent this situation with the following equation:

10 + x = -18

To solve for "x", we can isolate the variable by subtracting 10 from both sides of the equation:

x = -18 - 10

Simplifying the right-hand side:

x = -28

Therefore, the second number is -28.
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