Answer:
12c + 24
Explanation:
The first step, is to distribute. Multiply 6 to 4c and 2. Also multiply -6 to 2c and 2. After the distribution, you'd end up with 24c + 12 - 12c +12.
After this, the second step is to combine like terms. We know that 24c and -12c both have the variable of c. So, 24c - 12c=12c. We also know that 12 and 12 are also alike, so 12 + 12=24.
Now, we are left with the answer of 12c + 24.