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Chloei57
@Chloei57
June 2021
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C'est l'exercice 4 et 18 , merci d'avance !
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maudmarine
Verified answer
Exercice 4 :
A = 0,5 x (- 7) x (- 20)
A = - 3,5 x - 20
A = 70
B = (- 1) x 2 x (- 3) x (- 4)
B = - 2 x - 3 x - 4
B = 6 x - 4
B = - 24
C = A x B
C = 70 x - 24
C = - 1680
Exercice 18 :
A = 25 - 7 x (- 4) + 2
A = 25 + 28 + 2
A = 25 + 30
A = 55
B = 8 x (- 4) - 6 x (- 7)
B = - 32+ 42
B = 10
C = 1 - 10 x (- 5) + 7 x (- 3)
C = - 10 x - 35 x - 3
C = 350 x - 3
C = - 1050
1 votes
Thanks 2
Chloei57
Merci beaucoup ! Pourrais-tu m'expliquer pourquoi AxB donne 70 x -24 ?
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Verified answer
Exercice 4 :A = 0,5 x (- 7) x (- 20)
A = - 3,5 x - 20
A = 70
B = (- 1) x 2 x (- 3) x (- 4)
B = - 2 x - 3 x - 4
B = 6 x - 4
B = - 24
C = A x B
C = 70 x - 24
C = - 1680
Exercice 18 :
A = 25 - 7 x (- 4) + 2
A = 25 + 28 + 2
A = 25 + 30
A = 55
B = 8 x (- 4) - 6 x (- 7)
B = - 32+ 42
B = 10
C = 1 - 10 x (- 5) + 7 x (- 3)
C = - 10 x - 35 x - 3
C = 350 x - 3
C = - 1050