70 Calculer. A=-3+ 4(-5+7) B=-6-5 (8:2-3) C = (-5) × (-4) -(10 - 14) x 3
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Question
70 Calculer.
A=-3+ 4(-5+7)
B=-6-5 (8:2-3)
C = (-5) × (-4) -(10 - 14) x 3
A=-3+ 4(-5+7)
B=-6-5 (8:2-3)
C = (-5) × (-4) -(10 - 14) x 3
1 Réponse
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1. Réponse comptecompte0501
Réponse:
A= 3+4(-5+7)
=3+4(+2)
=7(+2)
=+14
B=-6-5(8÷2-3)
=-6-5(4-3)
=-6-5(1)
= -11 (1)
=-11
C=(-5)×(-4) -(10-14)×3
=(-5)×(-4)-(-4)×3
=+20-(-12)
=+20+12
=+32