Найдите корень уравнений(27) 1) 2(2,6х-4) = -30 + 5,09х
2) 3(17 - 22, 1х) = -7,-63,4х
3) 20, 1 х - 1,1 = 4(10 - 5,25х)
4) 19х - 0,4 = 2(32х - 5) + 0,6

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