\"\"

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The equation is \"\".

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According to subtraction property of equality; if a = b than a \"\" c = b \"\" c.

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\"\"        (Subtract 3y from each side)

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\"\"        (Commutative property: a + b = b + a) \ \

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

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

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\"\"                       (Subtract 7 from each side) \ \

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

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

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\"\"                           (Divide each side by 4)

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\"\"                                (Cancel common terms)

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\"\"                                     (Divide: \"\")

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\"\"

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Check:

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

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\"\"                   

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\"\"                   (Multiply:\"\")

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

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

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Compare the values, the equation is true.

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\"\"

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The value of \"\".