document.write( "Question 246060: Solve each system by the substitution method\r
\n" ); document.write( "\n" ); document.write( "x + 3y = 2
\n" ); document.write( "-x + y = 1
\n" ); document.write( "

Algebra.Com's Answer #179785 by checkley77(12844)\"\" \"About 
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x + 3y = 2 or x=2-3y
\n" ); document.write( "-x + y = 1 replace x by(2-3y) & solve fory.
\n" ); document.write( "-(2-3y)+y=1
\n" ); document.write( "-2+3y+y=1
\n" ); document.write( "4y=1+2
\n" ); document.write( "4Y=3
\n" ); document.write( "Y=3/4 ANS.
\n" ); document.write( "X+3(3/4)=2
\n" ); document.write( "X=9/4=2
\n" ); document.write( "X=2-9/4
\n" ); document.write( "X=2-2.25
\n" ); document.write( "X=-.25 ANS.
\n" ); document.write( "PROOF:
\n" ); document.write( "-(-.25)+3/4=1
\n" ); document.write( ".25=.75=1
\n" ); document.write( "1=1
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