The towns of Jackson, Bellevue, Salem, and Denton lie along a highway, in the order listed. The distance from Jackson…

The towns of Jackson, Bellevue, Salem, and Denton lie along a highway, in the order listed. The distance from Jackson to Salem is 84 miles. The distance from Bellevue to Denton is 61 miles. The distance from Bellevue to Salem is 18 miles. What is the distance from Jackson to Denton?