Răspuns :
notam numarul cu x
(x+214)-253=223
x+214=223+253
x+214=476
x=476-214
x=262
(x+214)-253=223
x+214=223+253
x+214=476
x=476-214
x=262
A=numărul căutat; (A+214)-253=223;(A+214)=223+253; (A+214)=476;A=476-214;A=262.