89 plus what equals 56?

This is how to calculate "89 plus what equals 56?" In other words, 89 plus a number equals 56. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

89 + what = 56

To solve this equation, we first add -89 to each side of the equal sign like this:

89 - 89 + what = 56 - 89

Then, we do the calculation to get the answer to "89 plus what equals 56?" as follows:

What = -33

The answer to "89 plus what equals 56?" is -33. You know this answer is correct because 89 plus -33 equals 56.

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89 plus what equals 57?
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