Hello so:
Réponse:
A: 3a+2a = 5a
B: 6x + 5x = 11x
E: 6t + 2z - t - 5z = 5t - 3z
F: 4x - y - 2y + x = 5x - 3y
I: a**2 + 5a - 5a**2 -+ a = -4**2 + 6a
J: z**2 + 9z + 3z - z**2 = 12z
Explications étape par étape:
If you have questions about this, text me in English please.
