\"\"

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The equation is \"\".

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\"\"                (Add 7 to each side)

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Squaring on each side and eliminate square roots.

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\"\"

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\"\"

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\"\"

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CHECK:-

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

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\"\" 

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\"\"         (Power of \"\")

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\"\"

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The solution is true.\"\"

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The value of y is 49.