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3,6y-4,8=6-0,8y-2
3,6y+0,8y=4+4,8
4,4y=8,8
y=8,8:4,4
y=2
3,6y-4,8=6-0,8y-2
3,6y+0,8y=6-2+4,8
4,4y=8,8 //:4,4 (dwustronnie dzielimy przez 4,4)
y=2
3,6y-4,8=6-0,8y-2
3,6y+0,8y=6+4,8-2
4,4y=8,8/:4,4
y=2