Do a two column proof!
Given: AB = DC
Prove: AC = DB
please help!!!!!!!

Answer:
AC = DB (Proved)
Step-by-step explanation:
Here, in the triangle ADE
AB = DC (Given)
Now, by EUCLID's LEMMA
If equals are added to equals, the sum are equal.
⇒ AB + BC = DC + BC
or, AC = DB
Hence Proved!