х+0,08х=3942
1,08х=3942
х=3942:1,08
х=3650
285 - (х:14-481)=216
х:14-481=285-216
х:14-481=69
х:14=481+69
х:14=550
х=550*14
х=7700
4)224+(105+32×х) )=330
224+105+32×х=330
32х=330-224-105
32х=1
х=/32