6+6+6+8+8=31 that's the answer to your problem
First you have to find a common denominator which would be 24.
5/6 = 20/24
7/8 = 21/24
5/8 = 15/24
So your final answer would be 7 over 8.
The answer to this is negative
I could only get number one which was; 1.75
She has extra because she only wants to make 80oz and it takes 8 and she has 30 so 30 is extra
