document.write( "Question 31022: AB intersects CD at E. If m angle BED = 5x+20 and m angle CEA = 7x+10, find m angle CEB \n" ); document.write( "
Algebra.Com's Answer #17751 by acerX(62)\"\" \"About 
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I am not sure how to draw this problem on this site but angle BED will equal and CEA because they are opposite angles. A form of a rule from Geometry. First we need to find these angles\r
\n" ); document.write( "\n" ); document.write( "\"5x%2B20=7x%2B10\" subtract 10 from both sides
\n" ); document.write( "\"5x%2B10=7x\" subtract 5x from both sides
\n" ); document.write( "\"10=2x\" divide by 2
\n" ); document.write( "\"5=x\"
\n" ); document.write( "These angles equal 5 degrees. Knowing that the angle of a line is 180 degrees.\r
\n" ); document.write( "\n" ); document.write( "\"180-5=x\"
\n" ); document.write( "\"175=x\"\r
\n" ); document.write( "\n" ); document.write( "CEB = 175 degrees
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