6х+3х=279х=27х=27:9х=3Ответ:3
6х+3х=27
9х=27
х=27/9
х=3
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6х+3х=27
9х=27
х=27:9
х=3
Ответ:3
6х+3х=27
9х=27
х=27/9
х=3