am nevoie de ajutor
![Am Nevoie De Ajutor class=](https://ro-static.z-dn.net/files/de1/1bae46cf475d4123e662599fabb97eda.jpg)
Notam suma cu A
Si facem
A-13+10-19=112
A-13+10=112+19=131
A-13=131-10=121
A=121+13=134
Verificare
134-13+10-19=
121+10-19=
131-19=
112