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1/2 + 1/4 + 1/8 + 1/16

We need to multiply those so all the denominators (bottom numbers) are the same (16).

1/2 * 8/8 + 1/4 * 4/4 + 1/8 * 2/2 + 1/16

8/16 + 4/16 + 2/16 + 1/16

Now we add the numerators and keep the same denominator.

12/16 + 3/16 = 15/16

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14y ago

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