Posted by Ryan on Sunday, November 27, 2011 at 4:42pm.
Given: x/6 + 2 = 15.
Prove: X = 78.
1. In the given Eq, substitute 78 for X. Reason: A quantity can be substituted for it's equal.
78/6 + 2 = 15,
13 + 2 = 15,
15 = 15.
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