document.write( "Question 1060727: Can you please help me. I'm want to solve this system of equation using the substitution method.
\n" ); document.write( "-5x-8y=17
\n" ); document.write( "2x-7y=-17 \n" ); document.write( "
Algebra.Com's Answer #675606 by Alan3354(69443)\"\" \"About 
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substitution method.
\n" ); document.write( "-5x-8y=17
\n" ); document.write( "2x-7y=-17
\n" ); document.write( "------------
\n" ); document.write( "2x-7y=-17 --> x = (7/2)y - 17/2
\n" ); document.write( "Sub for x in the 1st eqn.
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\n" ); document.write( "-5x-8y=17
\n" ); document.write( "-5*((7/2)y - 17/2) - 8y = 17
\n" ); document.write( "Multiply by 2 to eliminate fractions.
\n" ); document.write( "-5*(7y - 17) - 16y = 34
\n" ); document.write( "-35y + 85 - 16y = 34
\n" ); document.write( "-51y = -51
\n" ); document.write( "y = 1
\n" ); document.write( "====
\n" ); document.write( "x = (7/2)y - 17/2
\n" ); document.write( "x = -5
\n" ); document.write( "----------------------
\n" ); document.write( "That's the hard way.
\n" ); document.write( "-5x-8y=17 times -2 --> 10x+16y = -34
\n" ); document.write( "2x-7y=-17 --> 2x = 7y-17 times 5 --> 10x = 35y-85
\n" ); document.write( "----
\n" ); document.write( "sub for 10x
\n" ); document.write( "35y-85 + 16y = -34
\n" ); document.write( "51y = 51
\n" ); document.write( "etc\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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