3x+7/4=5.5
$10^{-1+b+c}$ - $10^{-1-b-c}$
Trains to Aybrin leave the station every 35 minutes.Trains to Bleechtree leave the train every 40 minutes.train to both leave at 7...
x-6=3
x+5=6
2(x+3)=x-4
4(5x-2)=2(9x+3)
9^(x+1)==3
$10^{2b}$ =0
