Answer:
The equation is as follow:

Explanation:
Where:
x=quotient
y=dividend
z=divisor
The multiples of a natural number are the natural numbers that result from multiplying that number by other natural numbers. In this case, the exercise says that the quotient is a multiple of 6 and the dividend is a multiple of 9, therefore it has:
6x
9y
The factors of a number are the terms in which it can be decomposed
multiplicatively the number, in this case, the divisor is a factor of 12, therefore it has:
12z