document.write( "Question 484088: 7x+6y=-30
\n" ); document.write( "-8x+y=50\r
\n" ); document.write( "\n" ); document.write( "What is the solution of the system, using substitution method. I need an ordered pair for the answer, and I keep obtaining the wrong answer, somehow i got 2, 6 and that was not correct. Help me please! :) \n" ); document.write( "
Algebra.Com's Answer #331237 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
Given:
\n" ); document.write( "7x+6y=-30 (equation 1)
\n" ); document.write( "-8x+y=50 (equation 2)
\n" ); document.write( ".
\n" ); document.write( "solve equation 2 for:
\n" ); document.write( "-8x+y=50
\n" ); document.write( "y=8x+50
\n" ); document.write( ".
\n" ); document.write( "substitute the above into equation 1 and solve for x:
\n" ); document.write( "7x+6y=-30
\n" ); document.write( "7x+6(8x+50)=-30
\n" ); document.write( "7x+48x+300=-30
\n" ); document.write( "55x+300=-30
\n" ); document.write( "55x=-330
\n" ); document.write( "x = -6
\n" ); document.write( ".
\n" ); document.write( "substitute above into 2 and solve for y:
\n" ); document.write( "-8x+y=50
\n" ); document.write( "-8(-6)+y=50
\n" ); document.write( "48+y=50
\n" ); document.write( "y = 2
\n" ); document.write( ".
\n" ); document.write( "answer: (x,y) = (-6, 2) \n" ); document.write( "
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