log₅(-9x+7)=2
log₅(-9x+7)=2log₅ 5
log₅(-9x+7)=log₅ 5²
log₅(-9x+7)=log₅ 25
-9х +7 = 25
-9х=25-7
-9х = 18
х = 18 : (-9)
х = -2
log₅(-9x+7)=2
log₅(-9x+7)=2log₅ 5
log₅(-9x+7)=log₅ 5²
log₅(-9x+7)=log₅ 25
-9х +7 = 25
-9х=25-7
-9х = 18
х = 18 : (-9)
х = -2