Question

Four less than a number divided by 3 is 20.

Answer 1

20 = 3x - 4
+4


24 = 3x
￣

Answer 2

If you would like to solve the following expression, you can calculate this using the following steps:

a number ... n = ?

n/3 - 4 = 20
n/3 = 20 + 4
n/3 = 24       /*3
n = 24 * 3 
n = 72

The number you are looking for is 72.