Ответ:
1) 2.7x+15y+83=0
2.7x=-15y-83
x=-50/9*y-830/27
2) 2x-y-5=0
2x=y+5
3)
4)
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Ответ:
1) 2.7x+15y+83=0
2.7x=-15y-83
x=-50/9*y-830/27
2) 2x-y-5=0
2x=y+5
3)
4)