1) <span>16(4х-3,4)=6,08
4х-3,4=6,08/16
4х=0,38+3,4
х=3,78/4
х=0.945
2) </span><span>(х+19,64)*0,18=144
</span> <span>х+19,64=144/0,18
х=800-19,64
х=780,36
3) </span><span>9,66:(х+0,17)=23
</span> <span>х+0,17=9,66/23
</span><span> х=0,42-0,17
х=0,25</span>