What is x when 99 divided by x equals 13?

To find the answer, just divide the dividend by the quotient: 99 ÷ 13 = 7.6153846153846

To prove this, let's compute 99 divided by 7.6153846153846: $\frac{99}{7.6153846153846} = 13$

How does it work?

Asking what the value of x could be when 99 divided by x gives a result of 13, is equivalent to solving the following equation:

$\frac{99}{x} = 13$

Multiply both sides by x: $\frac{99 x}{x} = 13 x$
$\frac{99 x}{x}$ is equivalent to $\frac{x}{x} \times 99$ , which simplifies to $1 \times 99$ (or just $99$ ).
Thus, the equation becomes: $99 = 13 x$
To find x, divide both sides by 13: $\frac{99}{13} = \frac{13 x}{13}$
Which gives, after simplification: $7.6153846153846 = x$ (or $x = 7.6153846153846$ )

So, if the dividend is 99 and the quotient is 13, the divisor is 7.6153846153846.