What is x when 7 divided by x equals 51?

To find the answer, just divide the dividend by the quotient: 7 ÷ 51 = 0.13725490196078

To prove this, let's compute 7 divided by 0.13725490196078: $\frac{7}{0.13725490196078} = 51$

How does it work?

Asking what the value of x could be when 7 divided by x gives a result of 51, is equivalent to solving the following equation:

$\frac{7}{x} = 51$

Multiply both sides by x: $\frac{7 x}{x} = 51 x$
$\frac{7 x}{x}$ is equivalent to $\frac{x}{x} \times 7$ , which simplifies to $1 \times 7$ (or just $7$ ).
Thus, the equation becomes: $7 = 51 x$
To find x, divide both sides by 51: $\frac{7}{51} = \frac{51 x}{51}$
Which gives, after simplification: $0.13725490196078 = x$ (or $x = 0.13725490196078$ )

So, if the dividend is 7 and the quotient is 51, the divisor is 0.13725490196078.