What is x when 57 divided by x equals 15?

In other words, what would the divisor be if the dividend were 57 and the quotient 15?

To find the answer, just divide the dividend by the quotient: 57 ÷ 15 = 3.8

To prove this, let's compute 57 divided by 3.8: 57 3.8 = 15

How does it work?

Asking what the value of x could be when 57 divided by x gives a result of 15, is equivalent to solving the following equation:

57 x = 15

  1. Multiply both sides by x: 57 x x = 15 x
  2. 57 x x is equivalent to x x × 57 , which simplifies to 1 × 57 (or just 57 ).
  3. Thus, the equation becomes: 57 = 15 x
  4. To find x, divide both sides by 15: 57 15 = 15 x 15
  5. Which gives, after simplification: 3.8 = x (or x = 3.8 )

So, if the dividend is 57 and the quotient is 15, the divisor is 3.8.