document.write( "Question 74292: Find values for m and b in the following system so that the solution to the system
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document.write( "is (-3,4).\r
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document.write( "5x+7y=b
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document.write( "mx+y=22\r
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document.write( "Please help!!
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document.write( "Thanks so much!!! \n" );
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Algebra.Com's Answer #53285 by funmath(2933)![]() ![]() ![]() You can put this solution on YOUR website! Find values for m and b in the following system so that the solution to the system \n" ); document.write( "is (-3,4).\r \n" ); document.write( "\n" ); document.write( "5x+7y=b \n" ); document.write( "mx+y=22 \n" ); document.write( ": \n" ); document.write( "Let x=-3 and y=4 in the first equation. \n" ); document.write( "5(-3)+7(4)=b \n" ); document.write( "-15+28=b \n" ); document.write( "13=b \n" ); document.write( ": \n" ); document.write( "Let x=-3 and y=4 in the second equation. \n" ); document.write( "m(-3)+4=22 \n" ); document.write( "-3m+4=22 \n" ); document.write( "-3m+4-4=22-4 \n" ); document.write( "-3m=18 \n" ); document.write( "-3m/-3=18/-3 \n" ); document.write( "m=-6 \n" ); document.write( ": \n" ); document.write( "Happy Calculating!!!! \n" ); document.write( " |