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1) Calculează in doua moduri
(14+6):2=
(18+12):3=
(24+12):6=
(28+21):7=
dau coroană
repedee!


Răspuns :

Salut !

Primul mod :

( 14 + 6 ) : 2 = 20 : 2 = 10

( 18 + 12 ) : 3 = 30 : 3 = 10

( 24 + 12 ) : 6 = 36 : 6 = 6

( 28 + 21 ) : 7 = 49 : 7 = 7

Al doilea mod :

( 14 + 6 ) : 2 = 14 : 2 + 6 : 2 = 7 + 3 = 10

( 18 + 12 ) : 3 = 18 : 3 + 12 : 3 = 6 + 4 = 10

( 24 + 12 ) : 6 = 24 : 6 + 12 : 6 = 4 + 2 = 6

( 28 + 21 ) : 7 = 28 : 7 + 21 : 7 = 4 + 3 = 7

Răspuns:

(14+6):2 = 20:2 = 10

14 + (6:2) = 14+3 = 17

(18+12):3 = 30:3 = 10

18+ (12:3) = 18 + 4 = 22

(24+12):6 = 36:6 = 6

24+ (12:6) = 24+2 = 26

(28+21):7 = 49:7 = 7

28+ (21:7) = 28+3 = 31