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некита150
@некита150
July 2022
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помогите плиз
решите
3x-4y=-7
2x+5y=3
(система уравнений)
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Answers & Comments
Delson3
3х-4у=-7 [*2
2х+5у=3 [*(-3)
....
6х-8у=-14
-6х-15у=-9
_________
-23у=-23
у=-1
...
у=1
2х+5у=3
...
у=1
2х=3-5
...
у=1
2х=-2
...
у=1
х=-1
14 votes
Thanks 12
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Answers & Comments
2х+5у=3 [*(-3)
....
6х-8у=-14
-6х-15у=-9
_________
-23у=-23
у=-1
...
у=1
2х+5у=3
...
у=1
2х=3-5
...
у=1
2х=-2
...
у=1
х=-1