∠DCE = ∠BAE because of alternate interior ∠s
∠CDE = ∠ABE because of alternate interior ∠s
Triangle DCE is congruent to Triangle BAE because of ASA
AE = CE because of CPCTC
BE = DE because of CPCTC
I would say 50/50 chance because it can go ether ways one can go heads the others can go tails
4(1/2x7)=12 <=> x28/2=12
x=12*2/28=24/28=12/14=6/7
So, difference as in subtract? so, if it is, it would be 15. if it means percent difference, it's about 60%.