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1,5s-2t=-3/*(-2)
3s+5t=-6
-3s+4t=6
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3s+5t-3s+4t=-6+6
9t=0
t=0
3s+5*0=-6
3s=-6/:3
s=-2
1,5s-2t=-3 / *-2
3s+5t=-6
-3s + 4t =6
doddajemy i wychodzi
9t = 0
t = 0
3 s= -6/ :3
s = -2
1,5s-2t=-3 /*2
3s+5t=-6
-3s+4t=6
0+9t=0
9t=0 / :9
t=0
3s+5*0=-6
3s=-6
s=-2
s=-2
t=0