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

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