document.write( "Question 150858This question is from textbook
\n" ); document.write( ": In triangle DEF, m\n" ); document.write( "
Algebra.Com's Answer #110772 by mangopeeler07(462)\"\" \"About 
You can put this solution on YOUR website!
2e=3f
\n" ); document.write( "d=100\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "d+e+f=180
\n" ); document.write( "100+e+f=180
\n" ); document.write( "e+f=80\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Solve for e
\n" ); document.write( "e=80-f\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Plug that in
\n" ); document.write( "2(80-f)=3f\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Distribute
\n" ); document.write( "160-2f=3f\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Add 2f to both sides
\n" ); document.write( "160=5f\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Divide both sides by 5
\n" ); document.write( "32=f\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "80-32=48
\n" ); document.write( "48=e\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Angle E= 48 degrees
\n" ); document.write( "Angle F= 32 degrees
\n" ); document.write( "
\n" );