What is x when 25 divided by x equals 7?

To find the answer, just divide the dividend by the quotient: 25 ÷ 7 = 3.5714285714286

To prove this, let's compute 25 divided by 3.5714285714286: $\frac{25}{3.5714285714286} = 7$

How does it work?

Asking what the value of x could be when 25 divided by x gives a result of 7, is equivalent to solving the following equation:

$\frac{25}{x} = 7$

Multiply both sides by x: $\frac{25 x}{x} = 7 x$
$\frac{25 x}{x}$ is equivalent to $\frac{x}{x} \times 25$ , which simplifies to $1 \times 25$ (or just $25$ ).
Thus, the equation becomes: $25 = 7 x$
To find x, divide both sides by 7: $\frac{25}{7} = \frac{7 x}{7}$
Which gives, after simplification: $3.5714285714286 = x$ (or $x = 3.5714285714286$ )

So, if the dividend is 25 and the quotient is 7, the divisor is 3.5714285714286.