document.write( "Question 121671: Solve each system by the addition method. \r
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document.write( "(1.5)x-2y=-0.25
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document.write( "3x+(1.5)y=6.375 \n" );
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Algebra.Com's Answer #89320 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! MULTIPLY THE FIRST EQUATION BY -2 & ADD THEM \n" ); document.write( "-3X+4Y=.5 \n" ); document.write( "3X+1.5Y=6.375 \n" ); document.write( "-------------------------- \n" ); document.write( "5.5Y=6.875 \n" ); document.write( "Y=6.875/5.5 \n" ); document.write( "Y=1.25 ANSWER \n" ); document.write( "3X+1.5*1.25=6.375 \n" ); document.write( "3X+1.875=6.375 \n" ); document.write( "3X=6.375-1.875 \n" ); document.write( "3X=4.5 \n" ); document.write( "X=4.5/3 \n" ); document.write( "X=1.5 ANSWER. \n" ); document.write( "PROOF: \n" ); document.write( "1.5*1.5-2*1.25=-.25 \n" ); document.write( "2.25-2.5=-.25 \n" ); document.write( "-.25=-.25 \n" ); document.write( " |