1 plus what equals 19?
This is how to calculate "1 plus what equals 19?" In other words, 1 plus a number equals 19. What is that number? We start by converting this word problem into an equation where "what" is what we want to solve:
1 + what = 19
To solve this equation, we first add -1 to each side of the equal sign like this:
1 - 1 + what = 19 - 1
Then, we do the calculation to get the answer to "1 plus what equals 19?" as follows:
What = 18
The answer to "1 plus what equals 19?" is 18. You know this answer is correct because 1 plus 18 equals 19.
1 plus what equals 20?
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