Раскройте скобки и приведите подобные слагаемые
(5a-3c)-(2+5a-3c)
a+(a-10)-(12+a)
(6x-8)-5x-(4-9x)
Упростите выражение
-2(2с-1)+4
6(с+1)-6с-5
19у+2(3-4у)-11у
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