Which option best represents the Subtraction Property of Equality? If a = b, then a - c = b - c
If a = b, then a - b = a - c
If a = b, then a + b = b + c
If a = b, then ab = a - c

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?