Posted by Peggy on Monday, August 23, 2010 at 11:45pm.
I believe the question should read:
Evaluate 7v-10 given that -9v-9=9 simplify the answer.
If that's the case, start with
-9v-9=9
and solve for v.
Substitute the (numerical) value of v into 7v-10 to get the answer required.
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