Răspuns :
2/3 din 915=2/3 *915=2*915/3=1830/3=610
2/3 din 1005=2/3 *1005=2*1005/3=2010/3=670
2/3 din 123=2/3 *123=2*123/3=246/3=82
2/3 din 1005=2/3 *1005=2*1005/3=2010/3=670
2/3 din 123=2/3 *123=2*123/3=246/3=82
(915 : 3) x 2 = 610
(1005 : 3) x 2 = 670
(123 : 3) x 2 = 82
Te rog coroana.