Réponses

  • x22
  • Modérateur Junior
2014-10-03T16:35:38+02:00
Bonjour,

74-7(25-(7-2)*3) 
=74-7(25(-5)*3)
=74-7(25-5*3)
=74-7(25-15)
=74-7(10)
=74-7x10
=74-70
=4

Voilà
2014-10-03T19:04:15+02:00
= 74 - 7 ( 25 - ( 7 - 2 ) x 3 )
= 74 - 7 ( 25 - 5 x 3 )
= 74 - 7 ( 25 - 15 )
= 74 - 7 x 10
= 74 - 70
= 4