What plus 18 equals 45?

This is how to calculate "What plus 18 equals 45?" In other words, what do you add to 18 to get 45? We start by converting this word problem into an equation where "What" is what we want to solve:

What + 18 = 45

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

What + 18 - 18 = 45 - 18

Then, we do the calculation to get the answer to "What plus 18 equals 45?" as follows:

What = 27

The answer to "What plus 18 equals 45?" is 27. You know this answer is correct because 27 plus 18 equals 45.

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What plus 18 equals 46?
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