SOLUTION: Hi, I really need some help with the following: If P = 3y + 7xy - 2x and Q = 9 - 2y, find the value of 3P - 4Q.

SOLUTION: Hi, I really need some help with the following: If P = 3y + 7xy - 2x and Q = 9 - 2y, find the value of 3P - 4Q.

Algebra.Com

Question 151636: Hi,
I really need some help with the following:
If P = 3y + 7xy - 2x and Q = 9 - 2y, find the value of 3P - 4Q.
Answer by jim_thompson5910(35256) (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
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