Sagot :
bonjour
A = -(4x + 1) + 7 + 7x
= - 4 x - 1 + 7 + 7 x
= 3 x + 6
B = -6 + 2x + (x +9)
= - 3 + 2 x + x + 9
= 3 x + 3
C = -(-8x +5) + 4 - 3x
= 8 x - 5 + 4 - 3 x
= 5 x - 1
D = 5 – (5x + 4) + 4 x
= 5 - 5 x - 4 + 4 x
= - x + 1
E = 5 - 6x + (-9x – 4)
= - 5 - 6 x - 9 x - 4
= - 15 x - 9
F = -(-5 – 4) – 2 x - 3
= 5 + 4 - 2 x - 3
= - 2 x + 6
Bonjour :)
Réponse en explications étape par étape :
- Question : Réduire chacune les expressions littérales suivantes :
A = - (4x + 1) + 7 + 7x
A = - 4x - 1 + 7 + 7x
A = - 4x + 7x - 1 + 7
A = 3x + 6
B = - 6 + 2x + (x + 9)
B = - 6 + 2x + x + 9
B = 2x + x - 6 + 9
B = 3x + 3
C = - (- 8x + 5) + 4 - 3x
C = 8x - 5 + 4 - 3x
C = 8x - 3x - 5 + 4
C = 5x - 1
D = 5 - (5x + 4) + 4x
D = 5 - 5x - 4 + 4x
D = - 5x + 4x + 5 - 4
D = - x + 1
E = 5 - 6x + (- 9x - 4)
E = 5 - 6x - 9x - 4
E = - 6x - 9x + 5 - 4
E = - 15x + 1
F = - (- 5 - 4) - 2x - 3
F = 5 + 4 - 2x - 3
F = - 2x + 5 + 4 - 3
F = - 2x + 6
Voilà