Réponses

2014-09-27T13:24:56+02:00
= ( 1 / 4 - 1 / 3 ) : ( - 2 )
= ( 3 / 12 - 4 / 12 ) : ( - 2 )
= - 1 / 12 : ( - 2 / 1 )
= - 1  / 12 x  ( - 1 / 2 )
= 1 / 24

= ( - 3 / 4 )^3
= - 27 / 64
  • Utilisateur Brainly
2014-09-27T13:25:04+02:00
(1/4 - 1/3) : (- 2)
= (3/12 - 4/12) : (- 2)
= - 1/12 : (- 2)
= - 1/12 x (- 1/2)
= 1/24

(- 3/4)³
= - 3³/4³
= - 27/64