Salut,
1 er cas >
15*1-3*2 = 15-6 = 9
(1+2)/4 = 3/4
2 ème cas >
15*0.5-3*1.5 = 3
(1.5+0.5)/4 = 2/4 = 1/2 =0.5
3ème cas >
15*3-3*15 = 0
(15+3)/4 = 18/4 = 4.5
