Question

Ecuaciones exponenciales

Answer 1

Respuesta:

${7}^{x + 3} = 243 \\ ln( {7}^{x + 3} ) = ln(243) \\( x + 3) ln(7) = ln(243) \\ (x + 3)(1.95) = 5.49 \\ x + 3 = \frac{5.49}{1.95} \\ x + 3 = 2.81 \\ x = 2.81 - 3 \\ x = - 0.19$