Simplify negative 6 and 1 over 4 – negative 2 and 1 over 8.
4 1 over 8
negative 8 3 over 8
negative 4 1 over 8
8 3 over 8

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.