87 plus what equals 43?

This is how to calculate "87 plus what equals 43?" In other words, 87 plus a number equals 43. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

87 + what = 43

To solve this equation, we first add -87 to each side of the equal sign like this:

87 - 87 + what = 43 - 87

Then, we do the calculation to get the answer to "87 plus what equals 43?" as follows:

What = -44

The answer to "87 plus what equals 43?" is -44. You know this answer is correct because 87 plus -44 equals 43.

Plus What Equals Calculator
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87 plus what equals 44?
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