Dan D. answered 05/15/16
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The usual way to solve this is to expand everything out
and then get the x's by themselves on one side and the numbers on the other,
like this:
7(2x-3) = 7
14x - 21 = 7
+21 +21 add 21 to each side of equ.
-----------------
14x = 28
divide both sides by 14 to get
x = 2