document.write( "Question 114905:
\n" ); document.write( "3x-y=5
\n" ); document.write( "2x+y=15\r
\n" ); document.write( "\n" ); document.write( "Solve each of the following systems of equations using the method of substitution. If the system is inconcistent or dependent, say no.\r
\n" ); document.write( "\n" ); document.write( "I am needing a bit of refresher on this. I have been away from it too long. Can you help please. Thanks.
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Algebra.Com's Answer #83578 by checkley71(8403)\"\" \"About 
You can put this solution on YOUR website!
ARE YOU SURE THERE ISN'T AN = SIGN IN THE SECOND EQUATION???????
\n" ); document.write( "3X-Y=5 OR -Y=-3X+5 OR Y=3X-5 NOW SUBSTITUTE (3X-5) FOR Y IN THE OTHER EQUATION.
\n" ); document.write( "2X+(3X-5)=15
\n" ); document.write( "2X+3X-5=15
\n" ); document.write( "5X=15+5
\n" ); document.write( "5X=20
\n" ); document.write( "X=20/5
\n" ); document.write( "X=4 ANSWER.
\n" ); document.write( "3*4-Y=5
\n" ); document.write( "12-Y=5
\n" ); document.write( "-Y=5-12
\n" ); document.write( "-Y=-7
\n" ); document.write( "Y=7 ANSWER.
\n" ); document.write( "PROOF
\n" ); document.write( "2*4+7=15
\n" ); document.write( "8+7=15
\n" ); document.write( "15=15
\n" ); document.write( "
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