Ответ:
1. 5x-2y=8
5x-2y-8=8-8
5x-2y-8=0
2.-3x+4y=7
-3x+4y=7=0
3x+4y+7=0
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Ответ:
1. 5x-2y=8
5x-2y-8=8-8
5x-2y-8=0
2.-3x+4y=7
-3x+4y=7=0
3x+4y+7=0