39:3*4 64:2*3 48:4*8 100-3*4 6*9+48:6 66:3*2-5 84-(48+26) 23+(75-48) 53-(53-40)

39:3×4 = 13×4 = 5264:2×3 = 32×3 = 9648:4×8 = 12×8 = 96100-3×4 = 100-12 = 886×9+48:6 = 54 + 8 = 6266:3×2-5 = 22×2-5 = 44-5 = 3984-(48+26) = 84 - 74 = 10 23+(75-48) = 23 + 27 = 50 53-(53-40) = 53 - 13 = 40