5 - 4 + 6 - 3 = 4
(5 - 4).6 . 3 = 18
5 + 4 + 6 + 3 = 18
5 + 4 . 6 - 3 = 26
5 - 4 + 6 . 3 = 19
5 . 4 - 6 + 3 = 17
5 . 4 + 6 - 3 = 23
(5 + 4).(6 - 3)=27
5 + 4 + (6 . 3)=27
5 + 4 .(6 - 3)=27
5 4 6 3 = 15