While on a safari in Africa I saw a small herd of zebras and cranes wandering over the grassland. I counted 18 heads in all and counted 60 legs. How many zebras were there and how many cranes? Show the two equations needed to solve this problem. What do the variables in these equations represent? Solve the system of equations using three methods (graphing, substitution, and elimination) and show detailed work here. The number of cranes was _____. The number of zebras was _____.