
This is how to calculate "68 plus what equals 9?" In other words, 68 plus a number equals 9. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:
68 + what = 9
To solve this equation, we first add -68 to each side of the equal sign like this:
68 - 68 + what = 9 - 68
Then, we do the calculation to get the answer to "68 plus what equals 9?" as follows:
What = -59
The answer to "68 plus what equals 9?" is -59. You know this answer is correct because 68 plus -59 equals 9.
68 plus what equals 10?
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