Question

find for x if 3^2x+4=343

Answer 1

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${3}^{2}x \: + 4 = 343 \\ 9x \: + 4 = 343 \\ 9x = 343 - 4 \\ 9x = 339 \\ x \: = \frac{339}{9} \\ x = \frac{113}{3} \\ x = 37.667$