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Приведите подобные слагаемые
2)3,2в-4,3в-3,2
в;
3)1/2с+1/3с+1/6с;
4)1,9д-4,2д+3,1в;
5)7,2а-5а-1,3а;
6)1/3в+1/5в-2/15в
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