the length of a rectangle is 3" more than its width, the perimeter of this rectangle is 30". Define variable for the width.

Question

the length of a rectangle is 3" more than its width, the perimeter of this rectangle is 30".

Define variable for the width.

Answer 1

Defining a variable is simply picking a letter and telling us what it represents, for example:

 

p = the price of pickles.