Răspuns:
total paine =79989
franzele =21600
paine inpletita=21600+2030=23630
79989-(21600+23630)=79989-45230=34759 paine intermediara
21600+23630+34759=45230+34759=79989
a+b+c=90000
a+b=60000
b+c=50000
60000+c=90000
c=90000-60000
c=30000
b+c=50000
b+30000=50000
b=50000-30000
b=20000
a+b+c=90000 inlocuim pe b si c
a+20000+30000=90000
a=90000-(20000+30000)
a=90000-50000
a=40000
Explicație pas cu pas: