425+351=(400+300)+(20+50)+(5+1)=700+70+6=776

Răspuns :

425+351=(400+300)+(20+50)+(5+1)=700+70+6=776
776=700+70+6=776=776
776=776=776=776
425+351=
(400+300)+(20+50)+(5+1)=
700+70+6=776