Sagot :
Réponse :
A = 5 + (2x + 3) = 2x + 5
B = 5x - (3 - 4x) = 5x + 4x - 3 = 9x - 3
C = (x-4) - 6 = x - 10
D = (4x + 2) + (-6x - 2) = 4x + 2 - 6x - 2 = - 2x
E = -(-3x - 1) + (x - 3) = 3x + 1 + x - 3 = 4x - 2
F = 8x - (5x + 2) + (3 - 4x) = 8x - 5x - 2 + 3 - 4x = -x + 1
Explications étape par étape
Réponse :
Bonjour,
A = 5+(2x + 3)
= 5 + 2x + 3
= 8 + 2x
B = 5x-(3 - 4x)
= 5x - 3 + 4x
= 9x - 3
C = (x - 4) - 6
= x - 4 - 6
= x - 10
D = (4x + 2) + (-6x - 2)
= 4x + 2 + (-6)x - 2
= -2x + 0
= -2x
E = -(-3x - 1) + (x - 3)
= -(-3x)-(-1)+x-3
= 3x+1+x-3
= 4x-2
F = 8x-(5x + 2) + (3 - 4x)
= 8x - 5x - 2 + 3 - 4x
= -1x + 1
Bon courage ! ;)