document.write( "Question 1110550: I'm supposed to solve these systems of equations. they are:\r
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document.write( "-5x + 4y= 3
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document.write( "x= 2y - 15\r
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document.write( "I'm supposed to find: \r
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document.write( "X=
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document.write( "y=
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document.write( "please help me. iv'e been trying to figure this out for a while. I don't know where to start because the second equation is throwing me off. \n" );
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Algebra.Com's Answer #725531 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve these systems of equations. they are: \n" ); document.write( "-5x + 4y= 3 \n" ); document.write( "x= 2y - 15 \n" ); document.write( "----- \n" ); document.write( "Use the 2nd equation. \n" ); document.write( "Substitute for \"x\" in the 1st equation to get: \n" ); document.write( "-5(2y-15) + 4y = 3 \n" ); document.write( "-10y+75 + 4y = 3 \n" ); document.write( "-6y = -72 \n" ); document.write( "y = 12 \n" ); document.write( "---- \n" ); document.write( "Now solve for \"x\":: \n" ); document.write( "x = 2y-15 \n" ); document.write( "x = 2*12-15 \n" ); document.write( "x = 24-15 \n" ); document.write( "x = 9 \n" ); document.write( "------------ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "----------- \n" ); document.write( " |