\"\"\"\"

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The equation is \"\"

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Apply distributive property: a(b-c)=ab-ac

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\"\"

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\"\"             (Multiply: \"\")

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

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\"\"

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Apply Subtraction  property of equality: Subtract  6y  from eachside.

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\"\"

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

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

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 \"\"                                       (Additive identity property: \"\")

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The statement is 30=20 is never true.   \"\"

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The Equation has no solution and the solution set is \"\".