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korbeya
@korbeya
July 2022
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Решите систему уравнений
2х-7у=3
{
3х+4у=-10
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SonaMnatsakanian
2х=3+7у
х=1,5+3,5у
3(1,5+3,5у)+4у=-10
4,5+14,5у=-10
14,5у=-10-4,5
14,5у=-14,5
у=-1
2х+7=3
2х=3-7
2х=-4
Х=-2
5 votes
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Answers & Comments
х=1,5+3,5у
3(1,5+3,5у)+4у=-10
4,5+14,5у=-10
14,5у=-10-4,5
14,5у=-14,5
у=-1
2х+7=3
2х=3-7
2х=-4
Х=-2