Răspuns :
pai le scrii invers :
p=4m
o=3m
n=2m
p-m=15 => 4m-m=15 => 3m=15 => m=5 =>
=> p=20;o=15;n=10;
p+m+n+o=20+5+10+15=50
p=4m
o=3m
n=2m
p-m=15 => 4m-m=15 => 3m=15 => m=5 =>
=> p=20;o=15;n=10;
p+m+n+o=20+5+10+15=50