jim took clothes to the cleaners three times last month first he brought 2 shirts and 1 pair of slacks and paid $6.47 then he bought 7 shirts 3 pairs of slacks and 1 sports and paid $28.89 finally he brought 4 shirts and 1 sports coats and paid $13.95 how much was he charged for each shirt, each pair of slacks, and each sports coat?