7. 40 + 63 = 18 + (63 + 22) Simplified: 40 + 63 = 18 + 85 103 = 1038. 156 + 0 = 156 Simplified: 156 = 1569. (62 + 26) + 38 = 26 + 100 Simplified: 88 + 38 = 126 126 = 12610. 93 + 60 = (93 + 16) + 44 Simplified: 153 = 109 + 44 153 = 15311. (150 + 0) + 25 = 73 + (77 + 25) Simplified: 150 + 25 = 73 + 102 175 = 17512. 182 + (17 + 118) = 300 + 17 Simplified: 182 + 135 = 300 317 = 317