I believe 3b/6a which could reduce to b/3a.
From the second:
2x-y=4
x=(4+y)/2 and applying this to first:
4+y+3y=12
4y+4=12
4y=8
y=2 and since x=(4+y)/2, x=3 so
x+y=2+3=5
Answer:
440
Explanation:
If 50% of the total gum balls are red which is 220, then the other 50% is 220.
(4,4).........................