What is x when 21 divided by x equals 53?

In other words, what would the divisor be if the dividend were 21 and the quotient 53?

To find the answer, just divide the dividend by the quotient: 21 ÷ 53 = 0.39622641509434

To prove this, let's compute 21 divided by 0.39622641509434: 21 0.39622641509434 = 53

How does it work?

Asking what the value of x could be when 21 divided by x gives a result of 53, is equivalent to solving the following equation:

21 x = 53

  1. Multiply both sides by x: 21 x x = 53 x
  2. 21 x x is equivalent to x x × 21 , which simplifies to 1 × 21 (or just 21 ).
  3. Thus, the equation becomes: 21 = 53 x
  4. To find x, divide both sides by 53: 21 53 = 53 x 53
  5. Which gives, after simplification: 0.39622641509434 = x (or x = 0.39622641509434 )

So, if the dividend is 21 and the quotient is 53, the divisor is 0.39622641509434.