Pre-Algebra - 7th Grade

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

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asked by Savannah
  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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