Найдите корень уравнения: 1)0,9х-0,6(х-3)=2(0,2х-1,3)
2)-0,4(3х-1)+8(0,8х-0,3)=5-(3.8х+4)
3)4/7(0,56-4,2у)+0,4=5/13(0,52-6,5у)
2)-0,4(3х-1)+8(0,8х-0,3)=5-(3.8х+4)
3)4/7(0,56-4,2у)+0,4=5/13(0,52-6,5у)
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