Ответ:
1)
3а= 17+28
3а=45
а= 15
2) 8х= -56+32
8х= 24
х= 3
3)
0.8у+ 4.8 =-4.8
0.8у= - 4.8 - 4.8
0.8у= 9.6
у=12
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Ответ:
1)
3а= 17+28
3а=45
а= 15
2) 8х= -56+32
8х= 24
х= 3
3)
0.8у+ 4.8 =-4.8
0.8у= - 4.8 - 4.8
0.8у= 9.6
у=12