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Indices With The Same Unknown

Algebra Level 2

$\large 5^x \times 5^x \times 3^{x-1} \times 3^{2x}= 125^x \times 3^{2x} \times 3^{2x}$

If $x$ satisfy the equation above, find $3(15^x)$ .

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by Ooi Ming Yang

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