Réponse :
Explications étape par étape
5x - 6 = -x + 3→→→ 5x + x = 3 + 6→→→ 6x = 9 →→→→→ x = 9/6 = 3/2
2x - 1/3 = 1 →→→→ 6x/3 - 1/3 = 1 → →→→→ 6x/3 = 1+1/3 →→→ 6x/3 = 3/3 + 1/3
→→→ 6x/3 = 4/3 →→→→→ x = (4/3) / (6/3) →→→→ x = (4/3) * (3/6) = 12/18 = 2/3.
les deux autres de l énoncé que j ai oublié :
2x-5 = 1+x →→→→2x-x = 1+5 →→→→ x= 6
7-8x = 12- 5x →→→ 7 -12 = - 5x +8x →→→→ -5 = 3x →→→ x= -5/3
Adam
