3v - 9 = 7 + 2v - v I'm assuming this is the equation. If not leave a note. Combine vs.
3v - 9 = 7+v Add 9 to both sides.
3v = 7 + 9 + v
3v = 16 + v Subtract v from both sides.
3v - v = 16
2v = 16 Divide by 2
v = 16/2
v = 8
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