What is x when 81 divided by x equals 87?

In other words, what would the divisor be if the dividend were 81 and the quotient 87?

To find the answer, just divide the dividend by the quotient: 81 ÷ 87 = 0.93103448275862

To prove this, let's compute 81 divided by 0.93103448275862: 81 0.93103448275862 = 87

How does it work?

Asking what the value of x could be when 81 divided by x gives a result of 87, is equivalent to solving the following equation:

81 x = 87

  1. Multiply both sides by x: 81 x x = 87 x
  2. 81 x x is equivalent to x x × 81 , which simplifies to 1 × 81 (or just 81 ).
  3. Thus, the equation becomes: 81 = 87 x
  4. To find x, divide both sides by 87: 81 87 = 87 x 87
  5. Which gives, after simplification: 0.93103448275862 = x (or x = 0.93103448275862 )

So, if the dividend is 81 and the quotient is 87, the divisor is 0.93103448275862.