48 : 4 + 8 * (7 - 5) = 12 + 8 * 2 = 12 + 16 = 28
48 : (4 + 8) * 7 - 5 = 48 : 12 * 7 - 5 = 23
(48 : 4 + 8) * 7 - 5 = (12 + 8) * 7 - 5 = 20 * 7 - 5 = 140 - 5 = 135
48 : (4 + 8) * (7 - 5) = 48 : 12 * 2 = 4 * 2 = 8
(48 : 4 + 8) * (7 - 5) = (12 + 8) * 2 = 20 * 2 = 40
48 : 4 + 8 * (7 - 5) = 12 + 8 * 2 = 12 + 16 = 28
48 : (4 + 8) * 7 - 5 = 48 : 12 * 7 - 5 = 23
(48 : 4 + 8) * 7 - 5 = (12 + 8) * 7 - 5 = 20 * 7 - 5 = 140 - 5 = 135
48 : (4 + 8) * (7 - 5) = 48 : 12 * 2 = 4 * 2 = 8
(48 : 4 + 8) * (7 - 5) = (12 + 8) * 2 = 20 * 2 = 40