Solved

Solve the Equation $\log _ { 21 } ( x + 84 ) = 3 - \log _ { 21 } x$

Question 409

Multiple Choice

Solve the equation.
- $\log _ { 21 } ( x + 84 ) = 3 - \log _ { 21 } x$

A) $\{ 63 \}$
B) $\{ 147 \}$
C) $\{ - 147 \}$
D) $\{ - 63 \}$

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