решите пожалуйста линейные уравнения
1) 5(3-2 у) - 4(9-у)=3(у+5)
2) 14(2 х - 3)-5(х+4=2(3 х +5)+5 х
3) 9(3 х -7)+3(8 х -11)=3(9 х+ 8)
4) 6(7 х-11)-13(х-6)=14(2х+ 1)
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