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Sagot :

Réponse:

64: a. -3×(-5+9)=-3×(4)=-12

b. -36÷(6+(-15))=-36÷(6-15)=-36÷(-9)=4

c. (-28÷(-7))-(-8×6)=4-(-48)=4+48=52

65: a. 8-4×3+6=2

b. -15-2×3+10=-11

c. -9÷3+5×(-7)=-38

d. (-3+8)×(6-12)=-30

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