Answer:
7/9
Step-by-step explanation:
you choose 7 colors out of 9 colors
13.5
4+5 = 9.
9/2 = 4.5
4.5 * 3 = 13.5
Input:
x/x + 1 - 1/x - 1 + 2×x/x^2 - 1
Result:
1/x
-8