Answer:
9+2a+7+4a-8
2a+16+4a-8
2a+8+4a
6a+8
Step-by-step explanation:
you can't really get an answer for this problem but you can simplify it
Gain - loss = profit
55- 45 = $10 net profit
So i think in the school there may be 4800 in the school. Hope this helps