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Calculeaza in doua moduri: (1+2+4+0)x3 (18-9-6):3 Ofer coroana

Răspuns :

La primul
Modul 1:
( 1+2+4+0 ) x 3 = ( 3+4 ) x 3 = 7 x 3 = 21
Modul 2:
( 1+2+4+0 ) x 3 = 1x3 + 2x3 + 4x3 + 0x3 = 3+6+12+0 = 9+12 = 21
La al doilea
Modul 1:
( 18-9-6) : 3 = ( 9-6 ) : 3 = 3:3 = 1
Modul 2:
( 18-9-6 ) : 3 = 18:3 - 9:3 - 6:3 = 6-3-2 = 3-2 = 1
primul exercitiu
primul mod
( 1 + 2  + 4 + 0 ) x 3 = 7 x 3 = 21
al doilea mod
( 1 + 2 + 4 + 0 ) x 3 = 1 x3 + 2 x3 + 4 x 3 = 3 + 6 +12 = 21
al doilea exercitiu
( 18 - 9 - 6 ) : 3= 3 : 3= 1
al doilea mod
( 18 - 9 - 6 ) : 3 = 18 : 3 - 9 : 3 - 6 : 3 = 6 - 3 - 2 = 1