1) 3/8 + 4/9 = (39 + 48) / (8*9) = (27 + 32) / 72 = 59 / 72
2) 7/12 - 3/8 = (78 - 312) / (12*8) = (56 - 36) / 96 = 20 / 96 = 5 / 24
3) 2 5/8 + 1 3/10 = 2 + 1 + 5/8 + 3/10 = 3 + 5/8 + 3/10 = 3 + 25/40 + 12/40 = 3 + 37/48 = 3 37/48
4) 6 7/10 - 4 5/12 = 6 - 4 + 7/10 - 5/12 = 2 + 7/10 - 5/12 = 2 + 84/120 - 50/120 = 2 + 34/120 = 2 + 17/60 = 2 17/60
1) 3/8 + 4/9 = (39 + 48) / (8*9) = (27 + 32) / 72 = 59 / 72
2) 7/12 - 3/8 = (78 - 312) / (12*8) = (56 - 36) / 96 = 20 / 96 = 5 / 24
3) 2 5/8 + 1 3/10 = 2 + 1 + 5/8 + 3/10 = 3 + 5/8 + 3/10 = 3 + 25/40 + 12/40 = 3 + 37/48 = 3 37/48
4) 6 7/10 - 4 5/12 = 6 - 4 + 7/10 - 5/12 = 2 + 7/10 - 5/12 = 2 + 84/120 - 50/120 = 2 + 34/120 = 2 + 17/60 = 2 17/60