5 log(2) x - 3 log(7) 49= 2 log(2) x
5 log₂ x - 2 log₂ x = 3 log₇49 ОДЗ х>0
3 log₂x = 3 log₇ 49
log₂ x = log₇7²
log₂ x = 2 log₇7
log₂ x = 2
х=2²= 4
5 log(2) x - 3 log(7) 49= 2 log(2) x
5 log₂ x - 2 log₂ x = 3 log₇49 ОДЗ х>0
3 log₂x = 3 log₇ 49
log₂ x = log₇7²
log₂ x = 2 log₇7
log₂ x = 2
х=2²= 4