document.write( "Question 93326: Solve each equation or system of equations.
\n" ); document.write( "y=x-3
\n" ); document.write( "7x-2y=21
\n" ); document.write( "

Algebra.Com's Answer #67938 by checkley75(3666)\"\" \"About 
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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( "
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