document.write( "Question 786318: There is a picture of a straight line divided into two angles. One angle is labeled as (2x+5)an acute angle; the other angle is an obtuse angle and is labeled as m. The question is: \"What is the degree measure of angle m in terms of x. The answer is (-2x +175). I understand the 180 degrees connection. Why is 2x expressed as -2x? \n" ); document.write( "
Algebra.Com's Answer #477866 by mananth(16946)\"\" \"About 
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m+(2x+5)= 180 \r
\n" ); document.write( "\n" ); document.write( "m+2x+5=180\r
\n" ); document.write( "\n" ); document.write( "-2x\r
\n" ); document.write( "\n" ); document.write( "m-2x+2x+5=180-2x\r
\n" ); document.write( "\n" ); document.write( "m+5=180-2x\r
\n" ); document.write( "\n" ); document.write( "-5
\n" ); document.write( "m+5-5=180-5-2x\r
\n" ); document.write( "\n" ); document.write( "m=175-2x\r
\n" ); document.write( "\n" ); document.write( "Hence
\n" ); document.write( "m=(-2x+175)
\n" ); document.write( "
\n" );