57 plus what equals 64?

This is how to calculate "57 plus what equals 64?" In other words, 57 plus a number equals 64. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

57 + what = 64

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

57 - 57 + what = 64 - 57

Then, we do the calculation to get the answer to "57 plus what equals 64?" as follows:

What = 7

The answer to "57 plus what equals 64?" is 7. You know this answer is correct because 57 plus 7 equals 64.

Plus What Equals Calculator
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57 plus what equals 65?
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