Ответ:
3/7•y-5= -13+y/7
3/7•y-y/7= -13+5
2y/7= -8
2y= -56
y= -28
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Ответ:
3/7•y-5= -13+y/7
3/7•y-y/7= -13+5
2y/7= -8
2y= -56
y= -28