Final answer:
To simplify the expression 5(10k-1)-2(2-8k), distribute the multiplication to each term within the parentheses and combine like terms to get 66k-9.
Step-by-step explanation:
To simplify the expression 5(10k-1)-2(2-8k), we need to distribute the multiplication to each term within the parentheses. This gives us 50k-5-4+16k. Simplifying further, we combine like terms to get 66k-9. Therefore, the equivalent expression is 66k-9.