2) 63:(14-7) (30-12):6 27:(38-35) (98-8):5 9*3-12:4 36:6+4*6 32:4+6*8 9*7-54:6 80-32:8:2 (80-32):8:2 80-32:(8:2) 36+24:6*2

63 : (14 - 7) = 63 : 7 = 9 (30 - 12) : 6 = 18 : 6 = 3 27 : (38 - 35) = 27 : 3 = 9 (98 - 8) : 5 = 90 : 5 = 18 9 * 3 - 12 : 4 = 27 - 3 = 24 36 : 6 + 4 * 6 = 6 + 24 = 30 32 : 4 + 6 * 8 = 8 + 48 = 56 9 * 7 - 54 : 6 = 63 - 9 = 54 80 - 32 : 8 : 2 = 80 - 4 : 2 = 80 - 2 = 78 (80 - 32) : 8 : 2 = 48 : 8 : 2 = 6 : 2 = 3 80 - 32 : (8 : 2) = 80 - 32 : 4 = 80 - 8 = 72 36 + 24 : 6 * 2 = 36 + 4 * 2 = 36 + 8 = 44