4 plus what equals 17?

This is how to calculate "4 plus what equals 17?" In other words, 4 plus a number equals 17. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

4 + what = 17

To solve this equation, we first add -4 to each side of the equal sign like this:

4 - 4 + what = 17 - 4

Then, we do the calculation to get the answer to "4 plus what equals 17?" as follows:

What = 13

The answer to "4 plus what equals 17?" is 13. You know this answer is correct because 4 plus 13 equals 17.

Plus What Equals Calculator
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