document.write( "Question 595754: How do I solve and check the following solving by substitution. \r
\n" ); document.write( "\n" ); document.write( "7x + 5y = -24
\n" ); document.write( "x = 28 - 7y
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Algebra.Com's Answer #377280 by Alan3354(69443)\"\" \"About 
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How do I solve and check the following solving by substitution. \r
\n" ); document.write( "\n" ); document.write( "7x + 5y = -24
\n" ); document.write( "x = 28 - 7y
\n" ); document.write( "------------
\n" ); document.write( "Sub for x in the 1st equation.
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