7х+45х=24:12
52х=2
х= 52:2
х= 26
(6х-4)∙5≥(5х-4)∙6
30x-20≥30x-24
-20≥-24 => x - любое
(12*12*12*12*12*12*12*12*12) : (2*2*2*2*2*2*2*2*2*2*2*2*2*2*2) * (3*3*3*3*3*3*3*3) = =<span>5159780352:32768*2187=
=157464*2187=
=344373768</span>
У=log3(8-13x) y'=-13/[(8-13x)*ln3]