16 plus what equals 13?

This is how to calculate "16 plus what equals 13?" In other words, 16 plus a number equals 13. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

16 + what = 13

To solve this equation, we first add -16 to each side of the equal sign like this:

16 - 16 + what = 13 - 16

Then, we do the calculation to get the answer to "16 plus what equals 13?" as follows:

What = -3

The answer to "16 plus what equals 13?" is -3. You know this answer is correct because 16 plus -3 equals 13.

Plus What Equals Calculator
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