Ответ:
12(х-1)=24(х+1)
12х-12=24х+24
12х-24х=24-12
-12х=12
х=12/-12
х=-1
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Ответ:
12(х-1)=24(х+1)
12х-12=24х+24
12х-24х=24-12
-12х=12
х=12/-12
х=-1