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svetlana656
@svetlana656
July 2022
1
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решите систему уравнений
2x+13y+10=0
6x-2y-11=0
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slivin2000
2x+13y+10=0 |*6
6x-2y-11=0 |*-2
__________________
12x+78y+60=0 x=2x+13*(-1)+10=0
-12x+4y+22=0 x=2x-13+10=0
82y+82=0 2x-3=0
82y=-82 2x=3
y=-1 x=3:2 x=1.5
Как-то так
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Answers & Comments
6x-2y-11=0 |*-2
__________________
12x+78y+60=0 x=2x+13*(-1)+10=0
-12x+4y+22=0 x=2x-13+10=0
82y+82=0 2x-3=0
82y=-82 2x=3
y=-1 x=3:2 x=1.5
Как-то так