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Calculer de 2 façons différentes les expressions numériques suivantes : A = 4(3+5) C = 7(2+1) B = 6(10-4) D=9(8-5)​

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bonjour;

A = 4(3+5)

= 4*3 +4*5 = 12+20 =32

= 4*8 = 32

C = 7(2+1)

= 7*2 +7*1 =14+7 = 21

= 7*3 = 21

B = 6(10-4)

= 6*10-6*4 = 60-24 =36

6*6 = 36

D=9(8-5)​

= 9*8-9*5 = 72-45 = 27

= 9* 3 = 27