Question

Drag a reason to each box to complete the proof.

Answer 1

To start off with, DF=EG's reason is given, since you stated it was given.

Next, DE+EF = EF+FG's reason is because of the substitution property of equality. Think "if a = c, b = c, then a = b"

Lastly, DE = FG's reason is because of the Subtraction property of equality. If you subtract EF on one side, you must do it on the other side.