a. x= # of miles per inch on the map 4 1/2 x inches on the map = 24 miles in real life 2(4 1/2 x) = 2(24) Addition Property of Equality 9x = 48 9x/9 = 48/9 Division Property of Equality x = 45/9 + 3/9 x = 5 + 1/3 x = 5 1/3 1 inch to 5 1/3 mi b. 1/4 in = 1 mi z= 1 mi z= 1/4 in 24z 24(1/4) 6 in
