26 plus what equals 21?

This is how to calculate "26 plus what equals 21?" In other words, 26 plus a number equals 21. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

26 + what = 21

To solve this equation, we first add -26 to each side of the equal sign like this:

26 - 26 + what = 21 - 26

Then, we do the calculation to get the answer to "26 plus what equals 21?" as follows:

What = -5

The answer to "26 plus what equals 21?" is -5. You know this answer is correct because 26 plus -5 equals 21.

Plus What Equals Calculator
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26 plus what equals 22?
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