Ответ:
7х+7у-5у=11
5у+5-у-3=10
7х+2у=11
4у+2=10
4у=8|4
у=2
7х+4=11
7х=7
х=1
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Ответ:
7х+7у-5у=11
5у+5-у-3=10
7х+2у=11
4у+2=10
4у=8|4
у=2
7х+4=11
7х=7
х=1