What value divided by 21 equals 15?

In other words, what would the dividend be if the divisor were 21 and the quotient 15?

To find the answer, just multiply the divisor with the quotient: 21 × 15 = 315

To prove this, let's compute 315 divided by 21: 315 21 = 15

How does it work?

Asking which value divided by 21 gives a result of 15 is equivalent to solving the following equation:

x 21 = 15

  1. We need to isolate x, so multiply both sides by 21: 21 x 21 = 21 × 15
  2. 21 x 21 is equivalent to 21 21 x , which simplifies to 1 x (or just x ).
  3. Thus: x = 21 × 15 = 315

So, if the divisor is 21 and the quotient is 15, the dividend is 315.