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Julie0404
@Julie0404
May 2019
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Bonjour,
J'ai un dm de maths, il y a une équation auquel je n'y arrive pas, il faut trouver le résultat de a :
(2a-3) -(4+5a) = -5 -2(a+3)
Pourriez vous m'aider ?
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LaPerlEDeMath
Verified answer
bonsoir =)
(2a-3) -(4+5a) = -5 -2(a+3)
2a -3 - 4 - 5a = -5 -2a - 6
2a - 5a + 2a = -5 - 6 +3 + 4
-a = -4
a = 4
voilà =)
1 votes
Thanks 0
Commentaires (4)
Verified answer
Bonjour
( 2 a - 3 ) - (4 + 5 a) = - 5 - 2 ( a +3)
2 a - 3 - 4 - 5 a = - 5 - 2 a - 6
- 3 a + 2 a = - 11 + 7
- a = - 4
a = 4
1 votes
Thanks 1
LaPerlEDeMath
- 5 - 2 ( a +3) il n y a pas + il y a *
LaPerlEDeMath
j'ai cru que tu as fais
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Lista de comentários
Verified answer
bonsoir =)(2a-3) -(4+5a) = -5 -2(a+3)
2a -3 - 4 - 5a = -5 -2a - 6
2a - 5a + 2a = -5 - 6 +3 + 4
-a = -4
a = 4
voilà =)
Verified answer
Bonjour( 2 a - 3 ) - (4 + 5 a) = - 5 - 2 ( a +3)
2 a - 3 - 4 - 5 a = - 5 - 2 a - 6
- 3 a + 2 a = - 11 + 7
- a = - 4
a = 4