document.write( "Question 156501: -8x-3y=-4
\n" ); document.write( "7x+5y=13\r
\n" ); document.write( "\n" ); document.write( "x=
\n" ); document.write( "y=\r
\n" ); document.write( "\n" ); document.write( "I don't remember, if this is one of those substitution problems where you add or subtract, can you please help me figure out this problem. \n" ); document.write( "
Algebra.Com's Answer #115283 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
-8x-3y =-4
\n" ); document.write( "7x +5y =13
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\n" ); document.write( "Multiply thru the 1st equation by 5; Multiply thru the 2nd equation by 3:
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\n" ); document.write( "-40x - 15y = -20
\n" ); document.write( "21x + 15y = 39
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\n" ); document.write( "Add the two equations and solve for \"x\":
\n" ); document.write( "-19x = 19
\n" ); document.write( "x = -1
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\n" ); document.write( "Substitute into -8x-3y=-4 to solve for \"y\":
\n" ); document.write( "-8*-1 -3y = -4
\n" ); document.write( "8 -3y = -4
\n" ); document.write( "-3y = -12
\n" ); document.write( "y = 4
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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