1.5х(х+4)-х(7-0.5х)=0.5(10-2х)=
=1.5х+6х-7х+0.5х=5-х
=1.5х+6х-7х+0.5х+х=5
х=5
ODЗ: 2х-1>0 2x>1 x>1/2
Log7 (2x-1)<Log7 7²
2x-1<49 2x<50 x<25
-////////////////1/2////\\\\\\\\\\\\\\\\\\\\\\\\\\////////////\\\25\\\\\\\
точки 1/2 и 25 не входят в решение неравенства х∈(1/2;25)
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