document.write( "Question 319592: what is the supplementary angle of m-n, a+90, and 2b-40? \n" ); document.write( "
Algebra.Com's Answer #228870 by mananth(16946)\"\" \"About 
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supplementary means sum of angles = 180
\n" ); document.write( "m-n,
\n" ); document.write( "180-(m-n)
\n" ); document.write( "180-m+n is the supplementary
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\n" ); document.write( " a+90,\r
\n" ); document.write( "\n" ); document.write( "180-(a+90)
\n" ); document.write( "180-a-90
\n" ); document.write( "90-a is the supplementary\r
\n" ); document.write( "\n" ); document.write( " and 2b-40?
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