Раскройте скобки и приведите подобные слагаемые 1)8(6а-7)-17с=
2)6b-7(12-3b)=
3)1,6(с-8)+0,4(8-3с)=
4)1,6(9а-3b)-(4b-6a)*1,5=
5)-(5,7m-6,7)-(7,9-3,5m)=
6)9/16(5 целых 1/3x - 4/15y)-7/23(3 целых 2/7x - 2 целых 4/21y)=
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