¡î3a+9¡î27a©ø

The given expression seems to be written using some unconventional symbols. It's unclear what exactly "¡î" and "©ø" stand for. However, we can still try to interpret the expression based on common mathematical operations and notation.

From the expression "¡î3a+9¡î27a©ø," it appears that "3a" and "27a" are being operated on using "¡î" and "©ø." To simplify this expression, let's break it down into smaller parts and see if we can make sense of it.

First, let's consider "3a+9." This is a simple addition involving the variable "a."

Next, we have "27a." This could be interpreted as the product of 27 and "a," i.e., 27 times "a."

Unfortunately, without clarification on the meaning of "¡î" and "©ø," we cannot determine how these symbols affect the expression.

To obtain a clear answer, it would be helpful to know the intended meaning or the correct notation used in the original expression. Could you please provide further context or explanation?