PreAlgebra
posted by Celest .
c5/4=3
Please explain. I don't get it!

As I explained earlier, you need to get the unknowns on one side and the knowns on the other side.
c5/4=3
Add 5/4 to both sides of the equation.
c 5/4 + 5/4 = 3 + 5/4
c = 3 5/4 = 4 1/4
Let's check it by substituting 4 1/4 for c.
4 1/4  1 1/4 = 3
Right!