Answer:

Step-by-step explanation:

Apply sum of cubes formula: 


Step-by-step explanation:
by deleting
9y = -9
y = -1
6x - 4 = -10
6x = -6 then x = -1
5/6 is not the definite ratio, when you take a larger sample size it could be off by a bit like 499/600 or 501/600
The answer is 104.
1/4 of 104 is 26, 104 - 26 = 78
78 - 7 = $71