Please help me to answer this question.

For each proportion find the unknown number x 1/5/8=×/15

2x minus y equals 6, x plus y equals negative 3

The map shows the location of the airport and a warehouse in a city. though not displayed on the map, there is also a factory 112 miles due north of the warehouse. a truck traveled from the warehouse to the airport and then to the factory. what is the total number of miles the truck traveled?