1)7 1/3+2 1/4=9 7/12
2)9 7/12 : 1/4=38 1/3
3)38 1/3-30 5/6=7 1/2
<span>ответ 2,7 ................</span>
Log3(log4(log²3(x-3)))=0,
О.Д.З. х-3>0, x>3,
log3(log4(log²3(x-3)))=log3(1),
log4(log3²(x-3))=1,
log4(log²3(x-3))=log4(4),
log²3(x-3)=4,
log3(x-3)=±2
1)log3(x-3)=2 2)log3(x-3)=-2
log3(x-3)=log3(9) log3(x-3)=log3(1/9)
x-3=9 x-3=1/9
x=12 x=28/9