Y+1>_4
sum= addition
greater tan or equal to means it has this symbol > with a line underneath it
The answer to this question is 8/10 which also equals 4/5
12 4/9 + 1 2/9=13 6/9+3 5/9=16 11/9 that answer is farther simpled 17 2/9
so the final answer is 17 2/9
5040, I looked up the factorial of 7