What is x when 63 divided by x equals 12?

To find the answer, just divide the dividend by the quotient: 63 ÷ 12 = 5.25

To prove this, let's compute 63 divided by 5.25: $\frac{63}{5.25} = 12$

How does it work?

Asking what the value of x could be when 63 divided by x gives a result of 12, is equivalent to solving the following equation:

$\frac{63}{x} = 12$

Multiply both sides by x: $\frac{63 x}{x} = 12 x$
$\frac{63 x}{x}$ is equivalent to $\frac{x}{x} \times 63$ , which simplifies to $1 \times 63$ (or just $63$ ).
Thus, the equation becomes: $63 = 12 x$
To find x, divide both sides by 12: $\frac{63}{12} = \frac{12 x}{12}$
Which gives, after simplification: $5.25 = x$ (or $x = 5.25$ )

So, if the dividend is 63 and the quotient is 12, the divisor is 5.25.