24 Calculer :
X a. -5-28: (-7)
c. 4 x (-8-(-6))
25 Calculer :
+xa.-6-7x4
-5+10
-5
C.
b. -64: (-8) - (-2)
d. (-3-7) × 5-11
3
b. 9 × (-6)-(-3)
d. 7- (-2,5) × (-4)
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