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Mathematics, 28.09.2019 19:00 sawyerharper

What number replaces the ◊?

15 = 15
15 + ◊ + 4 = 15 + 7

a.
15

b.
9

c.
7

d.
3

ansver
Answers: 1

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You know the right answer?
What number replaces the ◊?

15 = 15
15 + ◊ + 4 = 15 + 7

a.
15
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