Réponses

2014-09-18T11:56:28+02:00

A = 18 - 16 : 4/7

A = 18 - 16 x 7/4

A = 18 - 28

A = - 10


B = ( -2,6/39) : (-5/6)

B = 2/3 : 1,2

B ≈ 0,555555555555