What is x when 87 divided by x equals 15?

In other words, what would the divisor be if the dividend were 87 and the quotient 15?

To find the answer, just divide the dividend by the quotient: 87 ÷ 15 = 5.8

To prove this, let's compute 87 divided by 5.8: 87 5.8 = 15

How does it work?

Asking what the value of x could be when 87 divided by x gives a result of 15, is equivalent to solving the following equation:

87 x = 15

  1. Multiply both sides by x: 87 x x = 15 x
  2. 87 x x is equivalent to x x × 87 , which simplifies to 1 × 87 (or just 87 ).
  3. Thus, the equation becomes: 87 = 15 x
  4. To find x, divide both sides by 15: 87 15 = 15 x 15
  5. Which gives, after simplification: 5.8 = x (or x = 5.8 )

So, if the dividend is 87 and the quotient is 15, the divisor is 5.8.