Answer: 3/4
Step-by-step explanation: If we divide the numerator and the denominator of 9/12 by 3, we get the equivalent fraction 3/4 which is in lowest terms.
We divided by 3 because the greatest common factor of 9 and 12 is 3.
The factors of 9 are 1, 3, and 9 and the
factors of 12 are 1, 2, 3, 4, 6, and 12.
So the greatest common factor of 9 and 12 is 3 so that's why we divided the top and bottom of 9/12 by 3.