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ann666
@ann666
August 2022
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Решить систему. заранее спасибо
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Snovvflake
2/(2x-y) +3/(x-2y) =1/2
2/(2x-y) +1/(x-2y) =1/18
2/(2x-y)=1/2 -3/(x-2y)
1/2 -3/(x-2y) +1/(x-2y)=1/18
Решаем второе уравнение:
(-3*18+1*18+9(х-2у)-1)/18(х-2у)=0
-54+18+9х-18у=0
9х-18у=36
9(х-2у)=36
х-2у=4
х=4+2у
2/(2(4+2у)-у)=1/2 -3/4
2/(8+4у-у)=0,5-0,75
2/(8+3у)=-0,25
2=-1/4(8+3у)
2=-2-3у/4
-3у/4=4
3у=-16
у=1 1/3
х=
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Answers & Comments
2/(2x-y) +1/(x-2y) =1/18
2/(2x-y)=1/2 -3/(x-2y)
1/2 -3/(x-2y) +1/(x-2y)=1/18
Решаем второе уравнение:
(-3*18+1*18+9(х-2у)-1)/18(х-2у)=0
-54+18+9х-18у=0
9х-18у=36
9(х-2у)=36
х-2у=4
х=4+2у
2/(2(4+2у)-у)=1/2 -3/4
2/(8+4у-у)=0,5-0,75
2/(8+3у)=-0,25
2=-1/4(8+3у)
2=-2-3у/4
-3у/4=4
3у=-16
у=1 1/3
х=