Ответ:
х+2.5х+(2.5х-2)=22
х+2.5х+2.5х-2=22
х+2.5х+2.5х=22+2
6х=24
х=4
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Ответ:
х+2.5х+(2.5х-2)=22
х+2.5х+2.5х-2=22
х+2.5х+2.5х=22+2
6х=24
х=4