Question

Solve each equation
68=r/4

How to solve and be detailed.

Answer 1

68=r/4
to get r alone you need to times it by its reciprical which is the opposite (do it to both sides
example: 6/3=3/6

68=r/4 × 4/1
272=r

Answer 2

 68 = r/4.  Rearrange.
r/4 = 68.

Cross multiply.
r = 4*68
r =  272

That's it.