57 plus what equals 65?

This is how to calculate "57 plus what equals 65?" In other words, 57 plus a number equals 65. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

57 + what = 65

To solve this equation, we first add -57 to each side of the equal sign like this:

57 - 57 + what = 65 - 57

Then, we do the calculation to get the answer to "57 plus what equals 65?" as follows:

What = 8

The answer to "57 plus what equals 65?" is 8. You know this answer is correct because 57 plus 8 equals 65.

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57 plus what equals 66?
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