5. ifa + b = c, then 98uwama4tmseoirutomfcwiu46mvws8reutmc3a894u09fcmau34tmudthiueahtmiucxah5iudxyawem87r5tvma9w84uv59ma4eu6mgowieur9mvw8436uc0943au6dx984eau6f984u69bvsu986djaw578hda8h7rtv9a8e469mca8e4um9va84u5mcx9a84wu9mvc8ae46muy98cae4mt98xaher89thciureah98mc46y98fdweuyv8omficu340m9m2f034imfc0w39ritc0mw39i4d0mf923i46mv9wrei0ymdxewpodtisliyvmwortucomiwrtyvbqc8n9u35dxa98we4um6ae4u6nf9ceu46vg