What is x when 42 divided by x equals 28?

To find the answer, just divide the dividend by the quotient: 42 ÷ 28 = 1.5

To prove this, let's compute 42 divided by 1.5: $\frac{42}{1.5} = 28$

How does it work?

Asking what the value of x could be when 42 divided by x gives a result of 28, is equivalent to solving the following equation:

$\frac{42}{x} = 28$

Multiply both sides by x: $\frac{42 x}{x} = 28 x$
$\frac{42 x}{x}$ is equivalent to $\frac{x}{x} \times 42$ , which simplifies to $1 \times 42$ (or just $42$ ).
Thus, the equation becomes: $42 = 28 x$
To find x, divide both sides by 28: $\frac{42}{28} = \frac{28 x}{28}$
Which gives, after simplification: $1.5 = x$ (or $x = 1.5$ )

So, if the dividend is 42 and the quotient is 28, the divisor is 1.5.