Hey. I need some help in algebra ii. I'm having difficulties trying to understand and figure everything out. So if you may, please help me with the following. Thank you.
1. Perform the indicated operation. Leave the answer as an improper fraction: 7/8 (9/10 divided by 5/8) = __/__
2. Perform the indicated operation: 14a^2/10b^2 divided by 21a^2/15b^2
3. Perform the indicated operation: 7x^3/3 divided by 14x^2/6
4. Perform the indicated operation: a^2-2a+1/6 divided by (a^2-1)= ___/_____