\"\"

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The equation is \"\".

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Apply distributive property: \"\".

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\"\"

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\"\"(Multiply:  \"\")

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Apply distributive property: \"\".

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\"\"

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\"\"   (Multiply:  \"\") \"\"

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Apply distributive property: \"\".

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\"\"

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\"\"     (Multiply:  \"\")

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Apply distributive property: \"\".

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\"\"

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\"\"      (Multiply:  \"\") \"\"

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\"\"       (Apply commutative  property: \"\")

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\"\"                       (Apply additive inverse  property:\"\")

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\"\"                                                (Apply additive inverse  property:\"\")

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\"\"                             (Apply additive identity  property: \"\")

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\"\"                                   (Apply additive identity  property: \"\")

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

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\"\"                                         (Subtract 8k from each side)

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\"\"                                         (Apply commutative  property: \"\")

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\"\"                                                    (Apply additive inverse  property:\"\")

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\"\"                                                          (Apply additive identity  property: \"\")

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

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\"\"                                                          (Divide each side by negative 10)

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\"\"                                                                     (Cancel common terms)

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

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Check:

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To check, substitute \"\" in equation \"\".

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\"\" (Substitute \"\")

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Multiply: \"\".

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\"\"

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Multiply: \"\".

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\"\"

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\"\"       (Add: \"\")

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\"\"                     (Add: \"\")

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

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

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

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

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The equation is true. \"\"

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The value of \"\".