250 + 170 + 150 = (250 + 150) + 170 = 400 + 170 = 570
360 + 270 + 340 = (360 + 340) + 270 = 700 + 270 = 970
(250+150)+170=400+170=570
(360+340)+270=700+270+970
250 + 170 + 150 = (250 + 150) + 170 = 400 + 170 = 570
360 + 270 + 340 = (360 + 340) + 270 = 700 + 270 = 970
(250+150)+170=400+170=570
(360+340)+270=700+270+970