Sure! Here are some mathematical expressions matched with common phrases they may represent:
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"Twice a number x decreased by 5" - Matches with 2x - 5.
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"Twice the quantity of x decreased by 5" - Matches with 2(x - 5).
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"5 decreased by twice a number x" - Matches with 5 - 2x.
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"Twice a number x increased by 5" - Matches with 2x + 5.
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"Twice the quantity of x increased by 5" - Matches with 2(x + 5).
Let me know if you need assistance with anything else!