1) 3z=8+1 3z=9 z=3
2) 2z=1.4-0.4 2z=1 z=0.5
3) v=-3
4) x=-0.5
5)0.2y=0 y=0
6)-x=6-8+5 -x=3 x=3
7) 6u=4 u=<span>2/3</span>
<span>8) -x=5 x=-5</span>
<span>9) 2y=0 y=0</span>
<span>10) z=-2</span>
<span>11)<span>y = -1000</span></span>
<span><span>12)<span>x = 2</span></span></span>
<span><span>13)v=-5</span></span>
<span><span>14)0=3 - невозможно</span></span>
<span><span>15)дальше решить нельзя</span></span>