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PrettySanaa00
@PrettySanaa00
April 2019
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Salut les gens :) enfaite j'ai un D.M pour Lundi mais j'arrive pas a le faire Je vous l'écrit :
1)
Calculer pour x= 5 puis pour x= -2
a)4x b)x+7 c)3x-2
2)Calculer pour a= -1,b=4 et c = - 3 :
-3a+b-c
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shanaclaes98
1)a) 4x5=20 4x(-2)=-8
b) 5+7=12 (-2)+7=5
c) (3x5)-2=15-2=13 3x(-2)-2=-6-2=-8
2) -3a+b+c
-3x(-1)+4+(-3)
3+4-3=4
1 votes
Thanks 1
PrettySanaa00
Merci de m'avoir aider :) ♥
ImaneMejjiou
Derien :)
PrettySanaa00
;)
ImaneMejjiou
Pour x=5
a) 4x = 4*5 = 20
b) x+7 = 5+7 = 12
c) 3x-2= 3*5 -2 = 15-2= 13
Pour x=-2
a) 4x= 4*(-2) = -8
b) x+7= -2+7 = 5
c) 3x-2 = 3*(-2)-2 = -6-2 = -8
1 votes
Thanks 1
PrettySanaa00
mrc :) !
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b) 5+7=12 (-2)+7=5
c) (3x5)-2=15-2=13 3x(-2)-2=-6-2=-8
2) -3a+b+c
-3x(-1)+4+(-3)
3+4-3=4
a) 4x = 4*5 = 20
b) x+7 = 5+7 = 12
c) 3x-2= 3*5 -2 = 15-2= 13
Pour x=-2
a) 4x= 4*(-2) = -8
b) x+7= -2+7 = 5
c) 3x-2 = 3*(-2)-2 = -6-2 = -8