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OpenStudy (anonymous):
How can you prove that b - a is the negative of a - b?
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jimthompson5910 (jim_thompson5910):
hint: use the distributive property
OpenStudy (jhannybean):
\[\large -1(b-a) = -b +a \rightarrow a-b\ \]
OpenStudy (tkhunny):
Well, there would also be a Commutative Property in there, somewhere.
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