Answer:
Last one is correct
Step-by-step explanation:
The gcf of 36 and 72<span> is the largest positive integer that divides the numbers 36 and 72 without a remainder. Spelled out, it is the greatest common factor of 36 and 72. Here you can find the gcf of 36 and 72, along with a total of three methods for computing it. In addition, we have a calculator you should check out. Not only can it determine the gcf of 36 and 72, but also that of three or more integers including thirty-six and seventy-two for example. Keep reading to learn everything about the gcf (36,72) and the terms related to it. kmd</span>
First, Divide by 3 on both sides.
So 3x=12 will turn to 3x/3=12/3
Which isolates the variable x and the answer: x= 4
