Răspuns :
u+p=53 (u+p)-(p+c)=16
p+c=37
P=(u-c)x6
u+c=53-37=16
u+p+p+c=53+37=90
90-16=74
px2=74
p=37
u=53-37=16
c=0
p+c=37
P=(u-c)x6
u+c=53-37=16
u+p+p+c=53+37=90
90-16=74
px2=74
p=37
u=53-37=16
c=0