(93-56+14)-18:2= (89-27-43)-14:2=
(93-56+14)-18:2=(37+14)-9=51-9=42 (89-27-43)-14:2=(62-43)-7=19-7=12
(93 - 56 + 14) - 18 : 2 = 42 1) 93 - 56 = 37 2) 37 + 14= 51 3) 18 : 2 = -9 4) 51 - 9 = 42 (89 - 27 - 43) - 14 : 2 = 12 1) 89 - 27 = 62 2) 62 - 43 = 19 3) 14 : 2 = 7 4) 19 - 7 = 12