Evaluate or simplify the following expression .
`(-3) xx (-12) div (-4) + 3 xx 6`

Answer

To evaluate or simplify the expression `(-3) xx (-12) div (-4) + 3 xx 6`, we will follow the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

Let's break it down step by step:

### Step 1: Rewrite the expression
The expression can be rewritten for clarity as:
\[ (-3) \times (-12) \div (-4) + 3 \times 6 \]

### Step 2: Perform the division
First, we will handle the division part of the expression:
\[ (-3) \times (-12) \div (-4) \]
This can be calculated as:
\[ (-3) \times (-12) = 36 \]
Now we divide by (-4):
\[ 36 \div (-4) = -9 \]

### Step 3: Calculate the multiplication
Next, we calculate the multiplication part of the expression:
\[ 3 \times 6 = 18 \]

### Step 4: Combine the results
Now we combine the results from Step 2 and Step 3:
\[ -9 + 18 \]

### Step 5: Final calculation
Now we perform the addition:
\[ -9 + 18 = 9 \]

Thus, the simplified result of the expression `(-3) xx (-12) div (-4) + 3 xx 6` is:
\[ \boxed{9} \]

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