document.write( "Question 93326: Solve each equation or system of equations.
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document.write( "y=x-3
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document.write( "7x-2y=21 \n" );
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Algebra.Com's Answer #67938 by checkley75(3666)![]() ![]() ![]() You can put this solution on YOUR website! y=x-3 then \n" ); document.write( "7x-2(x-3)=21 \n" ); document.write( "7x-2x+6=21 \n" ); document.write( "5x=21-6 \n" ); document.write( "5x=15 \n" ); document.write( "x=15/5 \n" ); document.write( "x=3 answer \n" ); document.write( "y=5+3 \n" ); document.write( "y=8 answer \n" ); document.write( "proof \n" ); document.write( "7*3-2(3-3)=21 \n" ); document.write( "21-2*0=21 \n" ); document.write( "21=21 \n" ); document.write( " |