45 plus what equals 53?

This is how to calculate "45 plus what equals 53?" In other words, 45 plus a number equals 53. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

45 + what = 53

To solve this equation, we first add -45 to each side of the equal sign like this:

45 - 45 + what = 53 - 45

Then, we do the calculation to get the answer to "45 plus what equals 53?" as follows:

What = 8

The answer to "45 plus what equals 53?" is 8. You know this answer is correct because 45 plus 8 equals 53.

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45 plus what equals 54?
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