Answer:
28d + 36
Step-by-step explanation:
In this expression, the number 4 is multiplying everything inside the parentheses; we have to distribute the 4 onto both terms. First, we'll look at 4 times 7d.
4 times 7 is 28, so 4 times 7d is equal to 28d.
Now, what's 4 times 9? That's 36. So we have 28d + 36, and that's the simplified expression for 4(7d + 9).
Hopefully that was helpful! If you have any questions or need clarification on anything, let me know.
