Question

Biết rằng abc+acc+dbc=bcc.Tìm a,b,c,d

Answer 1

(abc) + (acc) + (dbc) = (bcc) (a, b, d > 0) => (abc) + (dbc) = (bcc) - (acc) = (b - a)*100 
=> (a + d)*100 + 2*(bc) = (b - a)*100 => 2*(bc) = (b - 2a - d)*100 chia hết cho 100 
=> (bc) = 50 => 5 - 2a - d = 1 => d = 2(2 - a) > 0 => a = 1 => d = 2 
Vậy (abcd) = 1502

Answer 2

abcd = 1502