42 plus what equals 68?

This is how to calculate "42 plus what equals 68?" In other words, 42 plus a number equals 68. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

42 + what = 68

To solve this equation, we first add -42 to each side of the equal sign like this:

42 - 42 + what = 68 - 42

Then, we do the calculation to get the answer to "42 plus what equals 68?" as follows:

What = 26

The answer to "42 plus what equals 68?" is 26. You know this answer is correct because 42 plus 26 equals 68.

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42 plus what equals 69?
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