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Boncuk5700
@Boncuk5700
April 2019
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Bonsoir j'ai des équations a résoudre mais je comprend pas pourriez vous m'aider svp, voici l"exo :
a) 2
+
=2-
b)
+
=
c)
-
=-
d)
×
=
e) -
×
= -
f)
=
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winner123
Verified answer
Bonsoir
a) tu mets tout sous dénominateur 10
20 x + 8 + 6 x = 20 - x - 6
20 x + 6 x + x = - 6 - 8
27 x = - 14
x = - 14/27
b) sous 63
63 x + 18 = 245
63 x = 245 - 18
63 x = 227
x = 227/63
c) sous 8
8 x - 3 = 10
8 x = 10 + 3
8 x = 13
x = 13/8
d ) sous 21
e) sous 20
f) sous 45
0 votes
Thanks 0
boncuk5700
Pk sur 10 sur 63 ...
winner123
pour mettre au même dénominateur, ce sont des fractions
boncuk5700
ahh d'accord
boncuk5700
Merci
boncuk5700
pour le b) comment vus avez trouver 18
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Verified answer
Bonsoira) tu mets tout sous dénominateur 10
20 x + 8 + 6 x = 20 - x - 6
20 x + 6 x + x = - 6 - 8
27 x = - 14
x = - 14/27
b) sous 63
63 x + 18 = 245
63 x = 245 - 18
63 x = 227
x = 227/63
c) sous 8
8 x - 3 = 10
8 x = 10 + 3
8 x = 13
x = 13/8
d ) sous 21
e) sous 20
f) sous 45