Morgan is adding -12 + 7 as the following -12 + 7 =? she wants to write -12 as a sum of two integers so that the sum one of the integers and 7 is equal to 0. How could Morgan write -12 to complete this problem?
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if you add -5 + -7 = 12
-12 + 7 = -5 + (-7+7)
-12 + 7 = -5 + (0)
-12 + 7 = -5
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