What is x when 12 divided by x equals 9?

To find the answer, just divide the dividend by the quotient: 12 ÷ 9 = 1.3333333333333

To prove this, let's compute 12 divided by 1.3333333333333: $\frac{12}{1.3333333333333} = 9$

How does it work?

Asking what the value of x could be when 12 divided by x gives a result of 9, is equivalent to solving the following equation:

$\frac{12}{x} = 9$

Multiply both sides by x: $\frac{12 x}{x} = 9 x$
$\frac{12 x}{x}$ is equivalent to $\frac{x}{x} \times 12$ , which simplifies to $1 \times 12$ (or just $12$ ).
Thus, the equation becomes: $12 = 9 x$
To find x, divide both sides by 9: $\frac{12}{9} = \frac{9 x}{9}$
Which gives, after simplification: $1.3333333333333 = x$ (or $x = 1.3333333333333$ )

So, if the dividend is 12 and the quotient is 9, the divisor is 1.3333333333333.