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Sagot :

Bonsoir,

(4x+3)-(x+5) = 4x + 3 - x - 5 = 3x - 2

7x-(3+4x) = 7x - 3 - 4x = 3x - 3

(3+4x)-7x = 3 + 4x - 7x = -3x + 3

6x-3-(3x-6) = 6x - 3 - 3x + 6 = 3x + 3

-(4x+5)-(-x) = -4x - 5 + x = -3x - 5

5x+3-(-3+5x) = 5x + 3 + 3 - 5x = 6

L'intrus est donc 6 (car pas de x).

REGINEGALMAR

Réponse :

(4x + 3) - (x + 5) = 4x + 3 - x - 5 = 3x - 2

7x - (3 + 4x) = 7x - 3 - 4x = 3x - 3

(3 + 4x) - 7x = 3 + 4x - 7x = 3 - 3x

6x - 3 - (3x - 6) = 6x - 3 - 3x + 6 = 3x + 3

- (4x + 5) - (-x) = - 4x - 5 + x = -3x - 5

5x + 3 - (-3 + 5x) = 5x + 3 + 3 - 5x = 6

Explications étape par étape

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