Calculer en écrivant les étapes de calcul A=(-8)+(+20)-(-15)+(+3) B=(-5)+(+13)-(+7)-(-5)+(+3)+(-20) C=-4+17+5-25 D=5-24-6+8-17+39
Mathématiques
Zampa112
Question
Calculer en écrivant les étapes de calcul
A=(-8)+(+20)-(-15)+(+3)
B=(-5)+(+13)-(+7)-(-5)+(+3)+(-20)
C=-4+17+5-25
D=5-24-6+8-17+39
A=(-8)+(+20)-(-15)+(+3)
B=(-5)+(+13)-(+7)-(-5)+(+3)+(-20)
C=-4+17+5-25
D=5-24-6+8-17+39
1 Réponse
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1. Réponse nguyenso9
Bonjour,
A = (-8) + (+20) - (-15) + (+3)
A = (+12) + (+15) + (+3)
A = (+27) + (+3)
A = (+30)
B = (-5) + (+13) - (+7) - (-5) + (+3) + (-20)
B = (+8) + (-7) + (+5) + (+3) + (-20)
B = (+1) + (+5) + (+3) + (-20)
B = (+6) + (+3) + (-20)
B = (+9) + (-20)
B = (-11)
C = -4 + 17 + 5 - 25
C = 13 + 5 - 25
C = 18 - 25
C = -7
D = 5 - 24 - 6 + 8 - 17 + 39
D = -19 - 6 + 8 - 17 + 39
D = -25 + 8 - 17 + 39
D = -17 - 17 + 39
D = -34 + 39
D = 5