4144-1800+345=c-199-299

Răspuns :

4144-1800+345=c-199-299
2344+345=c-199-299
2689=c-199-299
2689+299=c-199
2988=c-199
2988+199=c
3187=c
p: 2689=3187-199-299
2689=2988-299
2689=2689