Question

When 23 is subtracted from 4 times a certain number the result is 4

Answer 1

Let the unknown number be x.

Given,

4x - 23 = 4

4x = 27

x =
`(27)/(4)` = 6.75

Hence, the number is 6.75

Answer 2

If we say:
x = the 'certain number' we want to find
Then, we can formulate an equation:
4x - 23 = 4
Now, solve for x:
4x = 27
x = 27/4 = 6.25