What is x when 7 divided by x equals 18?

To find the answer, just divide the dividend by the quotient: 7 ÷ 18 = 0.38888888888889

To prove this, let's compute 7 divided by 0.38888888888889: $\frac{7}{0.38888888888889} = 18$

How does it work?

Asking what the value of x could be when 7 divided by x gives a result of 18, is equivalent to solving the following equation:

$\frac{7}{x} = 18$

Multiply both sides by x: $\frac{7 x}{x} = 18 x$
$\frac{7 x}{x}$ is equivalent to $\frac{x}{x} \times 7$ , which simplifies to $1 \times 7$ (or just $7$ ).
Thus, the equation becomes: $7 = 18 x$
To find x, divide both sides by 18: $\frac{7}{18} = \frac{18 x}{18}$
Which gives, after simplification: $0.38888888888889 = x$ (or $x = 0.38888888888889$ )

So, if the dividend is 7 and the quotient is 18, the divisor is 0.38888888888889.