What is x when 85 divided by x equals 39?

To find the answer, just divide the dividend by the quotient: 85 ÷ 39 = 2.1794871794872

To prove this, let's compute 85 divided by 2.1794871794872: $\frac{85}{2.1794871794872} = 39$

How does it work?

Asking what the value of x could be when 85 divided by x gives a result of 39, is equivalent to solving the following equation:

$\frac{85}{x} = 39$

Multiply both sides by x: $\frac{85 x}{x} = 39 x$
$\frac{85 x}{x}$ is equivalent to $\frac{x}{x} \times 85$ , which simplifies to $1 \times 85$ (or just $85$ ).
Thus, the equation becomes: $85 = 39 x$
To find x, divide both sides by 39: $\frac{85}{39} = \frac{39 x}{39}$
Which gives, after simplification: $2.1794871794872 = x$ (or $x = 2.1794871794872$ )

So, if the dividend is 85 and the quotient is 39, the divisor is 2.1794871794872.