Mathematics, 27.08.2019 11:30, vannitling12p4w44f

What number replaces the ◊?
8 + 5 = 4 + 9
8 + 5 + ◊ = 4 + 9 + 1

Answers: 1

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What number replaces the ◊?
8 + 5 = 4 + 9
8 + 5 + ◊ = 4 + 9 + 1...