What plus 18 equals 42?

This is how to calculate "What plus 18 equals 42?" In other words, what do you add to 18 to get 42? We start by converting this word problem into an equation where "What" is what we want to solve:

What + 18 = 42

To solve this equation, we first add -18 to each side of the equal sign like this:

What + 18 - 18 = 42 - 18

Then, we do the calculation to get the answer to "What plus 18 equals 42?" as follows:

What = 24

The answer to "What plus 18 equals 42?" is 24. You know this answer is correct because 24 plus 18 equals 42.

What Plus Calculator
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