What plus 15 equals 91?

This is how to calculate "What plus 15 equals 91?" In other words, what do you add to 15 to get 91? We start by converting this word problem into an equation where "What" is what we want to solve:

What + 15 = 91

To solve this equation, we first add -15 to each side of the equal sign like this:

What + 15 - 15 = 91 - 15

Then, we do the calculation to get the answer to "What plus 15 equals 91?" as follows:

What = 76

The answer to "What plus 15 equals 91?" is 76. You know this answer is correct because 76 plus 15 equals 91.

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What plus 15 equals 92?
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