Ответ:
3(0,4y+3)-0,6y=8
1,2y+9-0,6y=8
0,6y+3=8
0,6y=8-9
0,6y=-1
y=-(1/0,6)
y=-1⅔
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Ответ:
3(0,4y+3)-0,6y=8
1,2y+9-0,6y=8
0,6y+3=8
0,6y=8-9
0,6y=-1
y=-(1/0,6)
y=-1⅔