Solve: -6·6÷-3÷? = 24 | Sequential Division Challenge

$-6\cdot6:-3:?=24$

Let's write the exercise in the following form:

$\frac{-6\times6}{-3}:?=24$

We'll factor the 6 in the numerator into a multiplication exercise:

$\frac{-3\times2\times6}{-3}:?=24$

We'll cancel out the minus 3 found in the numerator and denominator of the fraction and get:

$12:?=24$

We'll multiply the question mark:

$12=24\times?$

We'll divide by 24:

$\frac{12}{24}=?$

We'll factor 24 into a multiplication exercise:

$\frac{12}{12\times2}=\text{?}$

We'll cancel out the 12 in the numerator and denominator of the fraction:

$\frac{1}{2}=\text{?}$