Notatii: pruni=pr; meri=m; caisi=c; peri=pe.
pr+m+c+pe=930
pr-17=m
12+(3•pr)
pr+c+14=pe;
{(pr-17) +[12+(3•psr)]+(pr+c+14)} =930|-14
{(pr-17) +[12+(3•pr)]+pr+c}=916
[pr-17+(12+3pr)]+pr+c=916
pr-17+12+3pr+pr+c=916
pr-17+12+4pr+c=916
5pr-27+12+c=916|-12
5pr-27+c=904|-27
5pr+c=904|-27
5pr+c=877-c
pr=877-1 c
5 5
pr=-1 c+877
5 5
5 5