164 + 175 + 136 = ( 164 + 136) + 175 = 300 + 175 = 475
(230 + 678 ) - 118 = 230 + ( 678 - 118 ) = 230 + 560 = 790
424 - ( 179 + 124) = ( 424 - 124 ) - 179 = 300 - 179 = 121
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164 + 175 + 136 = ( 164 + 136) + 175 = 300 + 175 = 475
(230 + 678 ) - 118 = 230 + ( 678 - 118 ) = 230 + 560 = 790
424 - ( 179 + 124) = ( 424 - 124 ) - 179 = 300 - 179 = 121