document.write( "Question 719116: 3x+2y=18
\n" ); document.write( "3x+8y=-12
\n" ); document.write( "Substitution method \n" ); document.write( "
Algebra.Com's Answer #441201 by lynnlo(4176)\"\" \"About 
You can put this solution on YOUR website!
ANSWER:
\n" ); document.write( "X=28/3,,Y=-5
\n" ); document.write( "I HAVE SET UP AN EXAMPLE FOR YOU
\n" ); document.write( "Y=X+1====A
\n" ); document.write( "2X+Y=10==B
\n" ); document.write( "(1)ADD PART A INTO PART B
\n" ); document.write( "2X+X+1=10
\n" ); document.write( "3X+1=10============ONE IS FROM THE ONE AND TEN
\n" ); document.write( "3X=9===DIVIDE 3 FROM BOTH SIDES
\n" ); document.write( "X=3
\n" ); document.write( "2(3)+Y=10
\n" ); document.write( "6+Y=10==MINUS 6 FROM BOTH SIDES
\n" ); document.write( "Y=4
\n" ); document.write( "PLUG IN TO CHECK PROOF:
\n" ); document.write( "2(3)+4=10
\n" ); document.write( "6+4=10
\n" ); document.write( "10=10 \n" ); document.write( "
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