# Pre-Algebra - 7th Grade

How do you add a negative number and a positive number.
For example: -9 + 7 = ?

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1. Think in terms of money.

+7 is money you have.

-9 is money you owe.

If you pay your debt with your \$7, then you will still owe \$2.

-9 + 7 = -2

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