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July 25, 2014

July 25, 2014

Posted by **Josie** on Saturday, October 13, 2012 at 8:20pm.

b + (-a) = b - a

What property would that be? Is it the addition property of equality? or something else.

- algebra -
**Henry**, Sunday, October 14, 2012 at 7:28pmAdding a negative number is the same as subtracting a positive number.

a + (-b) = a - b.

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