What is x when 12 divided by x equals 5?

To find the answer, just divide the dividend by the quotient: 12 ÷ 5 = 2.4

To prove this, let's compute 12 divided by 2.4: $\frac{12}{2.4} = 5$

How does it work?

Asking what the value of x could be when 12 divided by x gives a result of 5, is equivalent to solving the following equation:

$\frac{12}{x} = 5$

Multiply both sides by x: $\frac{12 x}{x} = 5 x$
$\frac{12 x}{x}$ is equivalent to $\frac{x}{x} \times 12$ , which simplifies to $1 \times 12$ (or just $12$ ).
Thus, the equation becomes: $12 = 5 x$
To find x, divide both sides by 5: $\frac{12}{5} = \frac{5 x}{5}$
Which gives, after simplification: $2.4 = x$ (or $x = 2.4$ )

So, if the dividend is 12 and the quotient is 5, the divisor is 2.4.