Pouvez vous me résoudre ce calcul: D= 1-(1/3+1/4)x2/5

*=multiplication
donc
D=1-(1/3+1/4)*2/5
D=1-(1*4/3*4+1*3/4*3)*2/5
D=1-7/12*2/5
D=1-14/60
D=46/60= 23/30

bonjour

d = 1 - ( 4/12 + 3/12) * 2/5
d = 1 - ( 7/12) * 2/5
d = 1 - 14/60
d = 60/60 - 14/60
d = 46/60 = 23/30