What plus 20 equals 45?

This is how to calculate "What plus 20 equals 45?" In other words, what do you add to 20 to get 45? We start by converting this word problem into an equation where "What" is what we want to solve:

What + 20 = 45

To solve this equation, we first add -20 to each side of the equal sign like this:

What + 20 - 20 = 45 - 20

Then, we do the calculation to get the answer to "What plus 20 equals 45?" as follows:

What = 25

The answer to "What plus 20 equals 45?" is 25. You know this answer is correct because 25 plus 20 equals 45.

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What plus 20 equals 46?
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