<prompt> Acha a,b,c,d ziwe nambari halisi kama hizofraca - bc - db - cd - a frac25.Tafuta jumla ya thamani zote zinazowezekana zafraca - cb - da - bc - d.  <response>: Kutoka kwa mlinganyo uliotolewa, 5a - bc - d 2b - cd - a, ambayo hupanuka kama5ac - 5ad - 5bc 5bd 2bd - 2ab - 2cd 2ac.Hii hurahisisha hadi 2ab 3ac 3bd 2cd 5ad 5bc, hivyoad bc frac2ab 3ac 3bd 2cd5.Kishaanzaalignfraca - cb - da - bc - d fracab - ad - bc cdac - ad - bc bd fracab cd - frac2ab 3ac 3bd 2cd5ac bd - frac2ab 3ac 3bd 2cd5 frac5ab 5cd - 2ab - 3ac - 3bd - 2cd5ac 5bd - 2ab - 3ac - 3bd - 2cd frac3ab - 3ac - 3bd 3cd-2ab 2ac 2bd - 2cd frac3ab - ac - bd cd-2ab - ac - bd cd -frac32.mwishopanga 