What value divided by 21 equals 20?

In other words, what would the dividend be if the divisor were 21 and the quotient 20?

To find the answer, just multiply the divisor with the quotient: 21 × 20 = 420

To prove this, let's compute 420 divided by 21: 420 21 = 20

How does it work?

Asking which value divided by 21 gives a result of 20 is equivalent to solving the following equation:

x 21 = 20

  1. We need to isolate x, so multiply both sides by 21: 21 x 21 = 21 × 20
  2. 21 x 21 is equivalent to 21 21 x , which simplifies to 1 x (or just x ).
  3. Thus: x = 21 × 20 = 420

So, if the divisor is 21 and the quotient is 20, the dividend is 420.