Раскройте скобки и приведите подобные слагаемые.
а) 3,7х - 5 -(6 - х)
б) 6 (1/3а - 2) + 4 (3 - 1,5а)
в) -(х + 3,5у) + (4,3х - 1,7у)
г)3 3/1*(0,3а - 0,6) - 1 1/4 * (0,8 - 1,6а)
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