COUCOU SIL VOUS PLAIT C EST TRES URGENT J FAIRE LE CALCUL 3/14*7/9+25/8*4/15

A = ( 3/14 x 7/9) + (25/8 x 4/15)
A = ( 1/14 x 7/3) + (5/8 x 4/3)
A = ( 1/2 x 1/3) + (5/2 x 1/3)
A = ( 1/ (2 x 3) + ((5 x 1)/ (2 x 3))
A =  1/6 + 5/ 6
A =  (1+ 5) / 6
A = 6/ 6
A = 1