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Solve for \(m\) if \(49(7^m) = 343^{3m+6}\)

  • A.-8/6
  • B.-2
  • C.-4/6
  • D.-1

Answer: B

Exp: \(49(7^m) = 343^{3m+6} \)

\(\Rightarrow 7^2 7^m = (7^3)^{3m+6} \)

\(\Rightarrow 7^{2+m} = 7^{9m+18}\)

Equating powers of 7 on both sides,

\(\Rightarrow m + 2 = 9m + 18\)

\(\Rightarrow - 16 = 8m\)

\(\Rightarrow m = -2\)

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