31 plus what equals 27?

This is how to calculate "31 plus what equals 27?" In other words, 31 plus a number equals 27. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

31 + what = 27

To solve this equation, we first add -31 to each side of the equal sign like this:

31 - 31 + what = 27 - 31

Then, we do the calculation to get the answer to "31 plus what equals 27?" as follows:

What = -4

The answer to "31 plus what equals 27?" is -4. You know this answer is correct because 31 plus -4 equals 27.

Plus What Equals Calculator
Here you can calculate a similar problem:

31 plus what equals 28?
Do you think you can solve a similar problem on your own? Try to figure out the next problem on our list and then go here to check the answer.