Answer:
3 * 15 - 12 = 33 So, the equation is saying that the result of 3 times 15 minus 12 is equal to 33.
Explanation:
Let's call the number of 7th graders "x". Then, the number of 8th graders is 3 * x - 12.
The total number of students in the student council is 48, so we can set up an equation:
x + (3 * x - 12) = 48
Expanding and simplifying:
4x - 12 = 48
Adding 12 to both sides:
4x = 60
Dividing both sides by 4:
x = 15
So, there are 15 7th graders and 3 * 15 - 12 = 33 8th graders in the Kennedy Middle School student council.