If ED=x+4 and DB=3x-8, FIND DB, GD, and EB?

Question

I'm having trouble solving one of my problems. I see how to do similar problems when my teacher goes over it but when I get home, I just struggle without any guidance. I don't know how to set up or what to set up for the GD part of this problem. The answers are given but we are asked to show how they come up with it.

These are the answers, I just don't understand the GD part of this problem.

ED=10

GB=20

DB=10

I have done ED and DB and setting it up the way I did for GD wouldn't work.

Answer 1

first off, remember that your quotient will not allow the abstract numerical values to surrender themselves to a non-linear trait.