The figure below shows line AB parallel to line CD. Segment EF is parallel to segment GH.
What is the value of x?

Question

The figure below shows line AB parallel to line CD. Segment EF is parallel to segment GH.
What is the value of x?

anonymous · Answer

explain how can i solve this..please! i truly appreciate it! ;)

btaylor · Answer

because of the parallel lines, you can say that the two angles are alternate exterior angles. So 2x+10=x+40. Solve for x, and you get x = 30.

anonymous · Answer

can you break it down, so i can see how you got to 30? thanx so much! you are awesome!

btaylor · Answer

which part? Proving they are equal, or solving for x?

anonymous · Answer

solving for x

btaylor · Answer

ok, you have 
2x+10=x+40
subtract x from both sides, and you get
x+10=40
now subtract 10 from both sides, and you get x = 30.
Got it?

anonymous · Answer

oh ok!! thank you!! now i get it! so my recent question take a look at it..i got 120 but i wanna make sure

anonymous · Answer