document.write( "Question 363729: Angle M and Angle N are Supplimentary Angles. If Angle M is 9 more than 1/2, Angle N what are the measures of the Angles? Show the work... \n" ); document.write( "
Algebra.Com's Answer #259395 by amoresroy(361)\"\" \"About 
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First Equation:
\n" ); document.write( "M + N = 180\r
\n" ); document.write( "\n" ); document.write( "2nd Equation
\n" ); document.write( "M = N/2 + 9\r
\n" ); document.write( "\n" ); document.write( "Substitute the value of M in Equation 2 to Equation 1\r
\n" ); document.write( "\n" ); document.write( "(N/2 + 9) + N = 180
\n" ); document.write( "N (1/2 + 1) = 180 - 9
\n" ); document.write( " 3N/2 = 171
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\n" ); document.write( "Multiply equation by 2/3\r
\n" ); document.write( "\n" ); document.write( " N = 2/3 (171)
\n" ); document.write( " N = 114\r
\n" ); document.write( "\n" ); document.write( "Since M + N = 180
\n" ); document.write( " M = 180 - N
\n" ); document.write( " M = 180 - 114
\n" ); document.write( " M = 66\r
\n" ); document.write( "\n" ); document.write( "The angles are 66 & 114
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