Answer:
56 - 28d
Explanation:
1) First, combine the like terms within the parentheses. So, add 2 and 6 together:
2) Then, use the distributive property to simplify further. To use the distributive property, you need to multiply all the terms within a set of parentheses by the number that needs to be multiplied next to it. So, in this case, multiply both 8 and -4d by 7:
Since we cannot simplify further or combine like terms, 56 - 28d is the simplified expression.