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Jadelacoccinell
@Jadelacoccinell
May 2019
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Bonjour pouvez vous m'aider svp ? ex: 39 et 40
merci d'avance
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swnn
39: a. 3x+20=7
3x = -13
x=-13/3
b. 2(L+5)=3
L+5=3/2
L=1,5-5
L=-3,5
c. 2-4y=1
-4y=-1
y=-1/-4=1/4
40: 3-5x=2
-5x=-1
x=-1/-5=1/5
(t-5)/3=7
t-5=21
t=26
m/2-3=6
m/2=9
m=18
0 votes
Thanks 1
jadelacoccinell
merci beaucoup
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Bonjour un autre exercice ou je n'y arrive pas :
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Re bonjour voila mon exercice de 4eme
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Lista de comentários
3x = -13
x=-13/3
b. 2(L+5)=3
L+5=3/2
L=1,5-5
L=-3,5
c. 2-4y=1
-4y=-1
y=-1/-4=1/4
40: 3-5x=2
-5x=-1
x=-1/-5=1/5
(t-5)/3=7
t-5=21
t=26
m/2-3=6
m/2=9
m=18