Question

if y=45 when x=15 find x when y=15

Answer 1

y = 45 ... x = 15
y = 15 ... x = ?

If you would like to know how much is x when y equals to 15, you can calculate this using the following steps:

45 * x = 15 * 15
45 * x = 225     /45
x = 5

The result is 5.