42 plus what equals 67?

This is how to calculate "42 plus what equals 67?" In other words, 42 plus a number equals 67. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:

42 + what = 67

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

42 - 42 + what = 67 - 42

Then, we do the calculation to get the answer to "42 plus what equals 67?" as follows:

What = 25

The answer to "42 plus what equals 67?" is 25. You know this answer is correct because 42 plus 25 equals 67.

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42 plus what equals 68?
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