758 есеп
жауабы;
1)2a-8a+3 а=(2-8+3)а=-3а
2)7а-13а-4а=(7-13-4)а=-10а
3)9в-5в-3в=(9-5-3)в=-7в
4)8в+4в-7в=(8+4-7)в=5в
5)0,6с-с+0,5с=(0,6-0,5)с=0,1с
6)2,9с+3с-10с=(2,9+3-10)с=-4,9с
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