Final answer:
To simplify the expression -9(8n+4p)-7p-2(10p-9n), distribute -9 and -2, and then combine like terms to get -54n - 63p.
Step-by-step explanation:
To simplify the expression -9(8n+4p)-7p-2(10p-9n), we can use the distributive property and combine like terms.
- Distribute -9 to each term inside the parentheses: -72n - 36p
- Distribute -2 to each term inside the second set of parentheses: -20p + 18n
- Combine like terms: -72n - 36p - 7p - 20p + 18n
- Combine like terms again: -54n - 63p
So the simplified expression is -54n - 63p.