Réponses

  • Utilisateur Brainly
2014-05-22T17:54:29+02:00
2014-05-22T17:56:19+02:00
4(63-x) = 3x
4*63 - 4x = 3x
252 -4x + 4x = 3x + 4x
252 = 7x
252/7=7x/7
36 = x