What plus 1 equals 16?

This is how to calculate "What plus 1 equals 16?" In other words, what do you add to 1 to get 16? We start by converting this word problem into an equation where "What" is what we want to solve:

What + 1 = 16

To solve this equation, we first add -1 to each side of the equal sign like this:

What + 1 - 1 = 16 - 1

Then, we do the calculation to get the answer to "What plus 1 equals 16?" as follows:

What = 15

The answer to "What plus 1 equals 16?" is 15. You know this answer is correct because 15 plus 1 equals 16.

What Plus Calculator
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What plus 1 equals 17?
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