32+11+18+39 = 32+18+11+39 = (32+18)+(11+39) = 50+50 = 100
45+21+15+49 = 45+15+21+49 = (45+15)+(21+49) = 50+70 = 120
1. 32 + 18 + 11 + 39 = 50 + 50 = 100
2. 45 + 15 + 21 + 49 = 60 + 70 = 130
32+11+18+39 = 32+18+11+39 = (32+18)+(11+39) = 50+50 = 100
45+21+15+49 = 45+15+21+49 = (45+15)+(21+49) = 50+70 = 120
1. 32 + 18 + 11 + 39 = 50 + 50 = 100
2. 45 + 15 + 21 + 49 = 60 + 70 = 130