28 plus what equals 79?

This is how to calculate "28 plus what equals 79?" In other words, 28 plus a number equals 79. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

28 + what = 79

To solve this equation, we first add -28 to each side of the equal sign like this:

28 - 28 + what = 79 - 28

Then, we do the calculation to get the answer to "28 plus what equals 79?" as follows:

What = 51

The answer to "28 plus what equals 79?" is 51. You know this answer is correct because 28 plus 51 equals 79.

Plus What Equals Calculator
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28 plus what equals 80?
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