Bonjour
résoudre en détaillant et en simplifiant les calculs
M= (4/5 +-3/2)÷ (-9/4 -1/6)
M = [(4 x 2)/(2 x 5) - (3 x 5)/(2 x 5)] : [(-9 x 3)/(4 x 3) - (1 x 2)/(6 x 2)]
m = (8/10 - 15/10) : (-27/12 - 2/12)
M = (-7/10) : (-29/12)
M = -7/10 x (-12/29)
M = 7/29 x 12/10
M = 7/29 x (2 x 6)/(2 x 5)
M = 7/29 x 6/5
M = 42/145
