19 plus what equals 66?

This is how to calculate "19 plus what equals 66?" In other words, 19 plus a number equals 66. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

19 + what = 66

To solve this equation, we first add -19 to each side of the equal sign like this:

19 - 19 + what = 66 - 19

Then, we do the calculation to get the answer to "19 plus what equals 66?" as follows:

What = 47

The answer to "19 plus what equals 66?" is 47. You know this answer is correct because 19 plus 47 equals 66.

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19 plus what equals 67?
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