What is x when 86 divided by x equals 87?

To find the answer, just divide the dividend by the quotient: 86 ÷ 87 = 0.98850574712644

To prove this, let's compute 86 divided by 0.98850574712644: $\frac{86}{0.98850574712644} = 87$

How does it work?

Asking what the value of x could be when 86 divided by x gives a result of 87, is equivalent to solving the following equation:

$\frac{86}{x} = 87$

Multiply both sides by x: $\frac{86 x}{x} = 87 x$
$\frac{86 x}{x}$ is equivalent to $\frac{x}{x} \times 86$ , which simplifies to $1 \times 86$ (or just $86$ ).
Thus, the equation becomes: $86 = 87 x$
To find x, divide both sides by 87: $\frac{86}{87} = \frac{87 x}{87}$
Which gives, after simplification: $0.98850574712644 = x$ (or $x = 0.98850574712644$ )

So, if the dividend is 86 and the quotient is 87, the divisor is 0.98850574712644.