document.write( "Question 867826: i have a question? i have no idea how to solve this problem by substitution\r
\n" ); document.write( "\n" ); document.write( "x-3y= -3
\n" ); document.write( "5x - 3y = - 15
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Algebra.Com's Answer #523207 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
x-3y= -3
\n" ); document.write( "5x - 3y = - 15
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\n" ); document.write( "Solve the 1st eqn for x, then sub for x in the 2nd one.
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