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1
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The expression  is equivalent to
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2
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The sum of  , is
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3
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What is the sum of  and  ?
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4
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Which expression is equivalent to  ?
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5
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What is the sum of  and  ?
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6
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The reciprocal of the expression  is
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7
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The expression  is equivalent to
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8
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Expressed as a single fraction,  is equal to
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9
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Expressed in simplest form,  is equivalent to
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10
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Expressed in simplest form,  is
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11
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Which expression is equivalent to  ?
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