aider moi svp!!! exercice 3

Le signe / est le trait de fraction.
J'espère que tu comprendra !

A = 1/10 + ( 1/2 x 2/5)
A = 1/10 + 2/10
A = 3/10
A = 0.3


B = 1/3 x ( 1/2 + 2/5 )
B = 1/3 x ( 1x5 / 2x5 + 2x2 / 5x2)
B = 1/3 x ( 5/10 + 4/10)
B = 1/3 x 9/10
B = 9/30
B = 3x3 / 3x10
B = 3/10
B = 0.3