Вычислим 93 - log₃ 54 + 7-log₇ 2
93 - log₃ 54 + 7-log₇ 2 = 9³ / 9log₃ 54 + 1 / 7log₇ 2 = 729 / 9log₃ 54 + 1/2
9log₃ 54 = (3²)log₃ 54 = 32log₃ 54 = 3log₃ 54² = 54² = 2916
729 / 2916 + 1/2 = 1/4 + 1/2 = 3/4 = 0.75
Ответ: 0.75