calculer fraction 23/40+?=1

23/40+?=1
23/40+?=40/40
la fraction sous le ? vaut 40/40-23/40
cela donne (40-23)/40=17/40

Bonsoir,

1/40 = 0.025
23 x 0.025 = 0.575

23/40 = 0.575

1 - 0.575 = 0.425

23/40 + 0.425 = 1 ou 23/40 + 17/40 = 1