Note that these berries have three levels of quality too: regular ones, Silver ones and Golden ones - although Silver and Gold berries are pretty hard to find! To find a solution, we can perform the following operations: Interchange the order of any two equations.
So this is negative 3 plus 6, which is indeed equal to 3. However, finding solutions to systems of three equations requires a bit more organization and a touch of visual gymnastics.
The three planes could be the same, so that a solution to one equation will be the solution to the other two equations. So plus 6 needs to be equal to 3.
So using these two equations, we got 2x minus z is equal to negative 7, just adding these two equations. That was the result we got. It seems to be the case that the higher the Combo streak, so the more you've caught in a row, then the higher the Combo Bonus.
So we're done.