document.write( "Question 711679: I was wondering how would you solve a linear system using subsitution? My teacher taught the class this in like 10 min and I'm not sure.. Can you show me to steps to answer -x+2y=-6 and 8x+y=31 thanks! \n" ); document.write( "
Algebra.Com's Answer #437561 by lynnlo(4176)\"\" \"About 
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-X+2Y=-6
\n" ); document.write( "8X+Y=3
\n" ); document.write( "STEP (1)MULTIPLY FIRST EQUATION BY 8
\n" ); document.write( "AFTER YOU MULTIPLY YOU WILL HAVE
\n" ); document.write( "-8X+16Y=-48
\n" ); document.write( "8X+Y=3
\n" ); document.write( "STEP (2)ADD THE TWO EQUATIONS TOGETHER TO ELIMINATE X
\n" ); document.write( "17Y=-45
\n" ); document.write( "STEP(3) FIND Y
\n" ); document.write( "Y=-45/17
\n" ); document.write( "STEP (4)SUBSTITUTE THE VALUE FOR Y INTO THE ORIGINAL EQUATION TO SOLVE X
\n" ); document.write( "-X+2(-45/17)=-6
\n" ); document.write( "X=12/17
\n" ); document.write( "Y=-45/17
\n" ); document.write( "
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