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-1/4x=2,4/:(-1/4)
x=-9,6-nie ma takiej odp
zad 8
20+3x=15x
12x=20/12
x=1 2/3
1,2x+8=6x
4,8x=8/4,8
x=1 2/3
3x-4=3/5x
0,5x=-4/:0,5
x=-8
2-0,3x=-1 1/2x
-1,2x=2/:(-1,2)
x=-1 2/3 to jest to rownanie