Posted by bob on Wednesday, October 3, 2007 at 10:34pm.
If PQ=3 and PQ+RS=5, then 3+RS=5 is an example of the ___________.
A. multiplication property of equality
B. reflexive property of equality
C. transitive property of equality
D. substitution property of equality

geometry  Yqyx, Wednesday, October 3, 2007 at 11:10pm
Substitution
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