Answer:
1/5+z= 3/5
Explanation:
if z is in the down left corner and the fractions are ony in the upper part it means that is adding if z is in the down right corner it means that is subtracting but if there is one z and there is a numerous amount of cubes on the right that means is dividing. and i think if there is a z on the left and in the other side there is cubes that might be multiplying.
Hope It Helps.