document.write( "Question 466600: ∠DEF and ∠ABC are supplementary angles and ∠DEF is four times as large as ∠ABC. Determine the measure of each angle. For some reason I have major problems with these lines. Any help, please. \n" ); document.write( "
Algebra.Com's Answer #319867 by stanbon(75887)\"\" \"About 
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∠DEF and ∠ABC are supplementary angles and ∠DEF is four times as large as ∠ABC. Determine the measure of each angle
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\n" ); document.write( "Equations:
\n" ); document.write( "E + B = 180 degrees
\n" ); document.write( "E = 4B
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\n" ); document.write( "Substitute for \"E\" and solve for \"B\";
\n" ); document.write( "4B + B = 180
\n" ); document.write( "5B = 180
\n" ); document.write( "ABC = 36 degrees
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\n" ); document.write( "Solve for E:
\n" ); document.write( "DEF = 180-36
\n" ); document.write( "DEF = 144 degrees
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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