9) Find the value of ‘x’ for which 5^2x ÷ 5^-9 = 5^7
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Answer:
Given, 7x−5=2x
⇒7x−2x=5 ...[Transposing x terms to one side]
⇒5x=5 ...[On simplifying]
⇒x=
5
5
=1.
∴x=1.
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