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Автор - Easychannel

Решите методом алгебраического сложения 3x-6y=12 3x+5y=11

Ответ

Автор - TheCleverOlya

Ответ:

х=3 9/11, у=-1/11

Объяснение:

3х-6у=12

+

-(3х+5у)=-(11)

------------------------

3х-6у-3х-5у=12-11

-11у=1

у=-1/11

тогда 3х-6*(-1/11)=12

3х+6/11=12. |:3

х+2/11=4

х=4-2/11

х=3 9/11

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