pourriez vous m'aider/expliquer ces equations svp? exercices 66 et 64.... Pergunta de ideia deCllara

January 2021 1 107 Report

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

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