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Cllara
@Cllara
January 2021
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pourriez vous m'aider/expliquer ces equations svp?
exercices 66 et 64
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maudmarine
Verified answer
Bonjour,
64)
a)
3x = 0
x = 0
b)
0x + 3 = 6
Impossible
c)
x/4 = 0
x = 0
d)
0x = 0
Impossible
e)
x + 2 = x - 1
x - x = - 2 - 1
0x = - 3
Impossible
f)
7x = - 2x
7x + 2x = 0
x = 0
65)
a)
4/5 (x - 3) = 2/5x + 2
4/5x - 12/5 = 2/5x + 2
4/5x - 2/5x = 10/5 + 12/5
2x = 22
x = 22/2
x = 11
b)
1/21x + 2 = 4/21 - 4
1/21x = 4/21 - 84/4 - 42/21
x = 4 - 84 - 42
x = 122
1 votes
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Lista de comentários
Verified answer
Bonjour,64)
a)
3x = 0
x = 0
b)
0x + 3 = 6
Impossible
c)
x/4 = 0
x = 0
d)
0x = 0
Impossible
e)
x + 2 = x - 1
x - x = - 2 - 1
0x = - 3
Impossible
f)
7x = - 2x
7x + 2x = 0
x = 0
65)
a)
4/5 (x - 3) = 2/5x + 2
4/5x - 12/5 = 2/5x + 2
4/5x - 2/5x = 10/5 + 12/5
2x = 22
x = 22/2
x = 11
b)
1/21x + 2 = 4/21 - 4
1/21x = 4/21 - 84/4 - 42/21
x = 4 - 84 - 42
x = 122