mer d'avance 1.95 x 100 : 5 : 4 = (32+64:2) +9 x 8 - 2 = 21 x 50 - (14x5+32x11)+20 =

Bonjour,

1,95 X 100 / 5 / 4 
195/5 = 39/4

(32 + 64/2) +9 X 8 -2
(32 +32) + 72 -2
64 +72 -2
134

31 X 50 -( 14 X 5 +32 X 11) +20
1550 -( 70 + 352) +20
1550 -( 422) +20
1550 +20 -422
1148