Réponses

2014-03-16T12:53:47+01:00
A 2x + 3 = 3xx +8 
=2x + 3 -3 = 3x +8-3
=2x = 3x +5
= 5/2 = 2,5
  • Utilisateur Brainly
2014-03-16T12:55:02+01:00
a 2x +3 = 3x +8
x=-5

b 3x -1 = 7x + 5
x=-3/2

c x -5 = 4x +13
x=-6

d 5x + 3 = -2x + 4

x=1/7