Brianna's SUV gets 22 mpg in the city and 30 mpg on the highway. The amount of gas she uses A(in gal) is given by A̅ = (1/22)C + (1/30)h, where c is the number of city miles driven and h is the number of highway miles driven. If Brianna drove 165 mi on the highway and used 7 gal of gas, how many city miles did she drive?