document.write( "Question 799746: two times a number added to another number is 25. three times the first number minus the other number is 20
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Algebra.Com's Answer #482812 by rfer(16322)![]() ![]() ![]() You can put this solution on YOUR website! 2x+y=25 \n" ); document.write( "3x-y=20 \n" ); document.write( "---------- \n" ); document.write( "y=25-2x \n" ); document.write( "------ \n" ); document.write( "3x-(25-2x)=20 \n" ); document.write( "3x-25+2x=20 \n" ); document.write( "5x=20+25 \n" ); document.write( "5x=45 \n" ); document.write( "x=45/5 \n" ); document.write( "x=9 \n" ); document.write( "---------- \n" ); document.write( "2*9+y=25 \n" ); document.write( "18+y=25 \n" ); document.write( "y=25-18 \n" ); document.write( "y=7 \n" ); document.write( "--------------- \n" ); document.write( "2x+y=25 \n" ); document.write( "2*9+7=25 \n" ); document.write( "(9,7) \n" ); document.write( " |