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66 Calculer les expressions suivantes.
a. 5 - 2x(-3 +2(-5))
b. 0,1 - 2 + (2,5 - 3 x 7) x 2
C. -2- 3 x
7 - 3x (-5)
1-3 – 4 X (+2)
+32
-
d.(-2)+3)x (–2 - (+3+ 2 x (-3)3) – 2 x(+3))
-

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