What is x when 63 divided by x equals 21?

In other words, what would the divisor be if the dividend were 63 and the quotient 21?

To find the answer, just divide the dividend by the quotient: 63 ÷ 21 = 3

To prove this, let's compute 63 divided by 3: 63 3 = 21

How does it work?

Asking what the value of x could be when 63 divided by x gives a result of 21, is equivalent to solving the following equation:

63 x = 21

  1. Multiply both sides by x: 63 x x = 21 x
  2. 63 x x is equivalent to x x × 63 , which simplifies to 1 × 63 (or just 63 ).
  3. Thus, the equation becomes: 63 = 21 x
  4. To find x, divide both sides by 21: 63 21 = 21 x 21
  5. Which gives, after simplification: 3 = x (or x = 3 )

So, if the dividend is 63 and the quotient is 21, the divisor is 3.