\"\"\"\"

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The equation is \"\"

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According to Addition Property of equality: If a = b then \"\". 

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\"\"          (Add 72 to each side)

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\"\"                         (Additive inverse property: \"\")

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\"\"                               (Add: \"\")\"\"

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Verify:

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To check the solution, substitute \"\" in original equation.

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\"\"

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\"\"                              (Subtract: \"\")

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Compare the values, the equation is true. \"\"

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The value of \"\"