6. Solve the following expressions: 4 * 2 + 4 6 * 2 + 6

Step-by-step solution:

1. Step 1: Calculate the first expression: 4 * 2 + 4.
   First, perform multiplication: \( 4 \cdot 2 = 8 \).
   Then, perform addition: \( 8 + 4 = 12 \).
2. Step 2: Calculate the second expression: 6 * 2 + 6.
   First, perform multiplication: \( 6 \cdot 2 = 12 \).
   Then, perform addition: \( 12 + 6 = 18 \).

Answer: 12, 18