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JulieEtJacomo
@JulieEtJacomo
January 2021
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Au secours maths niveau 4 ème ( le : veut dire égale dans le calcul ). résoudre l'équation :
10x - 3 ( 2x - 15 ) : 7x
ne me mettez pas que le résultat svp
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PAU64
10x - 3 (2x - 15) = 7x
10x - 3 * 2x - 3 * (- 15) = 7x
10x - 6x + 45 = 7x
10x - 6x - 7x = - 45
- 3x = - 45
x = - 45 / (- 3)
x = 15
2 votes
Thanks 1
hajarri2002
10x - 3 ( 2x - 15 ) =7x
10x-6x +45=7x
4x+45=7x
4x-7x=-45
-3x=-45
x=-45/-3
x=15
la repense c'est 15
1 votes
Thanks 1
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Lista de comentários
10x - 3 * 2x - 3 * (- 15) = 7x
10x - 6x + 45 = 7x
10x - 6x - 7x = - 45
- 3x = - 45
x = - 45 / (- 3)
x = 15
10x-6x +45=7x
4x+45=7x
4x-7x=-45
-3x=-45
x=-45/-3
x=15
la repense c'est 15