Please explain in an easy way how to evaluate the following.

Do 12/14 and 8/10 have the same value? explain your answer.

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?