\"\"

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From the SSS inequality theorem , \"\".

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\"\"   (SSS inequality)

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\"\"           (Subtract 20 from each side)\"\"

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Since the measure of any angle is always greater than zero.

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\"\"

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\"\"        (Subtract 20 from each side)

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The two inequalities can be written as the compound inequality \"\".\"\"

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The inequality to the possible values of x  is \"\".