document.write( "Question 151636: Hi,\r
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\n" ); document.write( "\n" ); document.write( "If P = 3y + 7xy - 2x and Q = 9 - 2y, find the value of 3P - 4Q.
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Algebra.Com's Answer #111465 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"3P+-+4Q\" Start with the given expression.\r
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\n" ); document.write( "\n" ); document.write( "\"3%283y+%2B+7xy+-+2x%29+-+4%289+-+2y%29\" Plug in P = 3y + 7xy - 2x. Plug in Q = 9 - 2y\r
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\n" ); document.write( "\n" ); document.write( "\"9y+%2B+21xy+-+6x+-+36+%2B8y\" Distribute\r
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\n" ); document.write( "\n" ); document.write( "\"-6x+%2B+21xy%2B17y+-+36\" Combine like terms.\r
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\n" ); document.write( "\n" ); document.write( "So \"3P+-+4Q=-6x+%2B+21xy%2B17y+-+36\"
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