What is x when 77 divided by x equals 81?

To find the answer, just divide the dividend by the quotient: 77 ÷ 81 = 0.95061728395062

To prove this, let's compute 77 divided by 0.95061728395062: $\frac{77}{0.95061728395062} = 81$

How does it work?

Asking what the value of x could be when 77 divided by x gives a result of 81, is equivalent to solving the following equation:

$\frac{77}{x} = 81$

Multiply both sides by x: $\frac{77 x}{x} = 81 x$
$\frac{77 x}{x}$ is equivalent to $\frac{x}{x} \times 77$ , which simplifies to $1 \times 77$ (or just $77$ ).
Thus, the equation becomes: $77 = 81 x$
To find x, divide both sides by 81: $\frac{77}{81} = \frac{81 x}{81}$
Which gives, after simplification: $0.95061728395062 = x$ (or $x = 0.95061728395062$ )

So, if the dividend is 77 and the quotient is 81, the divisor is 0.95061728395062.