Question

ma gandesc la un numar,il adun cu 139,scad din rezultat425,adaug 99 si obtin 571.la ce numar mam gandit

Answer 1

(x+139)-425+99=571
(x+139)-425=571-99=472
x+139=472+425=897
x=897-139
x=758
v:(758+139)-425+99=897-425+99=
472+99=571