document.write( "Question 725800: How do you do this equation by adding or using substitution??\r
\n" ); document.write( "\n" ); document.write( "4x=-3y-54
\n" ); document.write( "X=2y+3
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Algebra.Com's Answer #444321 by Alan3354(69443)\"\" \"About 
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How do you do this equation by adding or using substitution??\r
\n" ); document.write( "\n" ); document.write( "4x=-3y-54
\n" ); document.write( "X=2y+3
\n" ); document.write( "----------
\n" ); document.write( "Using substitution, sub for x in the 1st equation.
\n" ); document.write( "x = 2y + 3
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