Posted by Ryan on .
complete the twocolumn proof
given: x/6+2=15
prove: x=78

geometry 
Henry,
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.