\"\"\"\"

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The equation is \"\".

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Distribute terms using distributive property: a(b + c) = ab + ac.

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\"\"

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\"\"        (Multiply: \"\")

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\"\"               (Add: 12 + 2 = 14)\"\"

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Apply subtraction property of equality: Subtract 4.5 from each side.

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\"\"

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

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

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Apply subtraction property of equality: Subtract 4k from each side.

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\"\"

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Apply commutative property of addition: a + b = b + a.

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\"\"

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

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

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Apply division property of equality: Divide each side by 0.5.

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\"\"

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\"\"                                  (Cancel common terms)

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

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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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\"\"             (Add: 19 + 3 = 22 and 19 + 1 = 20)

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

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\"\"                                    (Add: 88 + 2 = 90)

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The equation is true.\"\"

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The solution is \"\".