document.write( "Question 1085037: I can't seem figure out the equation for this geometry word problem: \r
\n" ); document.write( "\n" ); document.write( "In the illustration, lines r and s are cut by a third line l to form (angle 1) and (angle 2). When lines r and s are parallel, (angle 1) and (angle 2) are supplementary. If (angle 1) = x + 50°,
\n" ); document.write( "(angle 2)= 2x - 20°, and lines r and
\n" ); document.write( "and s are parallel, find x. \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #699110 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
it looks like what they're telling you is that angles 1 and 2 are supplementary because the lines are parallel.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "if the angles are supplementary, then their sum is 180 degrees.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "so, you get x + 50 + 2x - 20 = 180\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "combine like termws to get 3x + 30 = 180\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "subtract 30 from both sides of the equation to get 3x = 150\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "divide both sides of the equation by 3 to get x = 50\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "when x = 50, x + 50 = 100 and 2x - 20 = 80\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "their sum is 180, satisfying the requirement that they be supplementary.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "your solution is that x = 50 degrees.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );