Question

пж помогите с примерами ​

Answer 1

Ответ:

$1) {2}^{x - 3} = {3}^{ - (x - 3)} \\ {2}^{x - 3} = {( \frac{1}{3} )}^{x - 3} \\ {(2 \times 3)}^{x - 3} = 1 \\ {6}^{x - 3} = {6}^{0} \\ x - 3 = 0 \\ x = 3$

$2) {3}^{x} ( {3}^{3} + 1) = {7}^{x}(7 + 5) \\ {3}^{x} \times 28 = {7}^{x} \times 12 \\ { (\frac{3}{7} )}^{x} = \frac{12}{28} \\ {( \frac{3}{7} )}^{x} = \frac{3}{7} \\ x = 1$