3 plus what equals 87?

This is how to calculate "3 plus what equals 87?" In other words, 3 plus a number equals 87. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

3 + what = 87

To solve this equation, we first add -3 to each side of the equal sign like this:

3 - 3 + what = 87 - 3

Then, we do the calculation to get the answer to "3 plus what equals 87?" as follows:

What = 84

The answer to "3 plus what equals 87?" is 84. You know this answer is correct because 3 plus 84 equals 87.

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

3 plus what equals 88?
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.