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Setting up an equation when given a word problem.

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A certain number is doubled and increased by 9. The result is 23. What is the number?

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Solution Summary

An equation is set up from a word problem. The solution is detailed and well presented.

Solution Preview

When given a word problem like this one, you will need to set up an equation to find the answer.

If you don't know what the number is, you will need to represent it in the equation using a variable, such as x. Since we ...

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