Question

25а÷b³: (25аb)
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Answer 1

$frac{25a}{b {}^{3} } : (25ab) \ \ frac{25a}{b {}^{3} } times frac{1}{25ab} \ \ frac{1}{b {}^{3} } times frac{1}{b} \ \ frac{1}{b {}^{4} }$