Answer:
If the value of x was 40, then it would make the equation true.

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"How to we solve for x?"
To solve for x, we need to simplify both sides of the equation, then isolate the variable. In this case, the x variable being 40.
"Now, how do we determine if 40 would make the equation true?"
- When you insert 40 in replacement of x, the left side 12 is equal to the right side 12, meaning that the given statement would always be true. Hence, x equals 40.
Hope this helps!