Question

the length of a rectangular park is 3 feet shoter than 3/2 times its width. if the length is 123 feet , what is the width of the park in feet?

Answer 1

We can write an equation for the length in terms of the width here and use that to solve the problem:
$l=\frac{3}{2}w-3$

Now substitute in the information that we know, namely $l=123$:
$123=\frac{3}{2}w-3$
$126=\frac{3}{2}w$
$84=w$

So the width is 84 feet.