Răspuns :
99 - 66 = 3 ( 33-22) = 3 * 11 (3-2) = 33
sau
99 - 66 = 33( 3-2) = 33
24 x 6-6x4= 6 (24 - 4)= 6x 20 =120
sau
99 - 66 = 33( 3-2) = 33
24 x 6-6x4= 6 (24 - 4)= 6x 20 =120