Bonjour
ex1 calcul en détaillant les étapes
A:(345-79)/2 D:4.02+6*0.8
B:3,9/2.6/5 E:(1.3-0,07)/3
C:0.01*(29-4) F:5,5*20,9+3,7

ex2 gévellope puis réduis les expressions

A:3x(x+2)
B:7x(x-6)
C:1x(x+5)
D:4x(5-x)
E:1.6(x-0,5)
F:4(x+1)
G:7(3x-8)
H:6(2x²-4)

merci di repondre aujourd hui
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