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orskaya9999
@orskaya9999
July 2022
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Решить систему уравнений:
2х/5=1+у/2
2х/5+у=-2
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nikoly2007
2х/5=1+у/2 (1)
2х/5+у=-2 (2)
Вычтем из уравнения (1) - уравнение (2)
-y=1+y/2+2
-y-y/2=3
-2y-y=6
-3y=6
y=-2 - подставим в (1)
2x/5=1-1
2x/5=0
x=0
ответ: х=0; y=-2
1 votes
Thanks 2
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Answers & Comments
2х/5+у=-2 (2)
Вычтем из уравнения (1) - уравнение (2)
-y=1+y/2+2
-y-y/2=3
-2y-y=6
-3y=6
y=-2 - подставим в (1)
2x/5=1-1
2x/5=0
x=0
ответ: х=0; y=-2