$\"\"$

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The equation is $\"1$ .

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$\"6$ (Multiply each side by 6)

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$\"open$ (Cancel common terms)

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For any real number b and for any positive integer n, $\"\"$ .

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$\"\"$

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$\"\"$

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Apply cube on each side and eliminate cube roots.

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$\"\"$

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$\"12$ (Evaluate the cube: $\"\"$ )

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$\"fraction$ (Divide each side by 12)

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$\"begin$ (Cancel common terms)

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$\"begin$ (Divide: $\"216$ ) $\"\"$

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Check:

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To check the solution, substitute $\"begin$ in $\"1$ .

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$\"1$

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$\"1$ (Multiply: $\"12$ )

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$\"1$ (Rewrite: $\"216$ )

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$\"6$

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$\"begin$ (Cancel common terms)

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The check solution is true. $\"\"$

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The solution a is 18.