Answer:
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Step-by-step explanation:
Please attach the question
(b⁷/4⁵)⁻³
= (4⁵/b⁷)³
= 4¹⁵/b²¹
Therefore answer is option b
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27,000 I think it's rii
1.5
20
RN is 1/4 of HS, and 5x4=20.
It’s nothing