simplify rational equations expressions??

Question

how to do this : probles with steps.....pleas HELP thank you

1. 15a^2/25a^4 2. 32h^3/48h^2 3. 12n^4/21n^6

4.3x-6/6 5. x^2+7x-8/x2+6x-7 5. 10+3x-x^2/x^2-4x-5

Answer 1

use the rule x^m / x^n = x^(m-n)

1. 3/5a^2
2. 2h/3
3. 4/7n^2
4. x/2-1
5. (x+8)(x-1)/(x+7)(x-1)=(x+8)/(x+7)
6. -(x+2)(x-5)/(x-5)(x-1)=-(x+2)/(x-1)