# SOLUTION: Can somebody help me please? 7. If P = 3y + 7xy - 2x and Q = 9 - 2y, find the value of 3P - 4Q

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 Question 151658This question is from textbook elementary and intermediate algebra concepts and applications : Can somebody help me please? 7. If P = 3y + 7xy - 2x and Q = 9 - 2y, find the value of 3P - 4QThis question is from textbook elementary and intermediate algebra concepts and applications Answer by jim_thompson5910(28510)   (Show Source): You can put this solution on YOUR website! Start with the given expression. Plug in P = 3y + 7xy - 2x. Plug in Q = 9 - 2y Distribute Combine like terms. So