document.write( "Question 716459: how do you slove ts question usingthe sub method
\n" ); document.write( "6x+14y=54
\n" ); document.write( "3x+5y=30 \n" ); document.write( "
Algebra.Com's Answer #439873 by stanbon(75887)\"\" \"About 
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6x+14y=54
\n" ); document.write( "3x+5y=30
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\n" ); document.write( "Solve the bottom equation for \"y\":
\n" ); document.write( "y = (30-3x)/5
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\n" ); document.write( "Substitute for \"y\" in the top equation and solve for \"x\":
\n" ); document.write( "6x + 14[(6-(3/5)x)] = 54
\n" ); document.write( "-------
\n" ); document.write( "6x + 84 - (42/5)x = 54
\n" ); document.write( "6x - (42/5)x = -30
\n" ); document.write( "(30/5)x - (42/5)x = -30
\n" ); document.write( "(-12/5)x = -30
\n" ); document.write( "-------
\n" ); document.write( "-12x = -150
\n" ); document.write( "x = 12.5
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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