12x-18y

6(2x-3y)

To simplify the expression 12x - 18y, follow these steps:

Step 1: Identify the terms
The expression 12x - 18y consists of two terms: 12x and -18y.

Step 2: Simplify each term individually
In the term 12x, the coefficient is 12 and the variable is x. There is no further simplification possible for this term.
In the term -18y, the coefficient is -18 and the variable is y. There is no further simplification possible for this term.

Step 3: Combine like terms (if applicable)
Since the terms 12x and -18y do not have the same variables (x and y), they cannot be combined.

Therefore, the simplified form of 12x - 18y is just the original expression itself, 12x - 18y.