$\"\"$ $\"\"$

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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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Apply Subtraction property of equality: Subtract 2a from eachside.

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$\"\"$

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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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$\"\"$ (Add 15 to each side)

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

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

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

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Graph the solution set on a number line $\"\"$

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Check:

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To check, substitute 11, a number and equals to 11, in $\"\"$ .

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$\"\"$ (Substitute $\"\"$ )

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$\"\"$ (Substract : $\"\"$ )

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

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The equlity is true

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$\"\"$

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The inequality solution is a=11.