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sugarbreeze
@sugarbreeze
August 2022
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выясните имеет ли система решение и сколько :1,5х=1 и -3х+2у=-2; 2х= 11-2у и 6у=22-4х
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irinaorlova2
1,5х=1
-3х+2у=-2
х=1:1 2/5=5/7
-3*5/7+2у=-2
-15/7+2у=-2
2у=-2+15/7
2у=1/7
у=1/7:2=1/7*1/2=1/14
2х=11-2у
х=11-2у/2
6у=22-4*(11-2у):2
6у=22-22+4у
6у-4у=0
2у=0
у=0
3 votes
Thanks 5
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Answers & Comments
-3х+2у=-2
х=1:1 2/5=5/7
-3*5/7+2у=-2
-15/7+2у=-2
2у=-2+15/7
2у=1/7
у=1/7:2=1/7*1/2=1/14
2х=11-2у
х=11-2у/2
6у=22-4*(11-2у):2
6у=22-22+4у
6у-4у=0
2у=0
у=0