Ответ:
[tex](3,1y+15x)+(-14y-2,6x)= 3,1y+15x-14y-2,6x=-10,9y+12,4x[/tex]
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Ответ:
[tex](3,1y+15x)+(-14y-2,6x)= 3,1y+15x-14y-2,6x=-10,9y+12,4x[/tex]