Раскройте скобки и преведите подобные слагаемые: а) -(11,3+8,2а)+(8,4-1,8а)
Б) 2/9(1,8а-4,5б)-1,5(0,4а-0,2б) В)0,7(8t-0,4р)-0,2(2,5а-1,5б) г) 9(1,2х-4)-8,3х-4(1,3-х)+2
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