Final answer:
To find the original output capacity of the factory, we need to subtract the excess of 15 from the total output.
Step-by-step explanation:
To find the original output capacity of the factory, we need to subtract the excess of 15 from the total output. Let's denote the original output capacity as 'x'. So, the equation representing the question is: x - 15 = x. By subtracting 'x' from both sides, we get -15 = 0. This equation has no solution. Hence, there is an error in the given information or calculation. Please double-check the values provided and try again.