решите уравнение -30×(1 5\6x-3 1\5)=231

-30 * (1 5/6 x - 3 1/5) = 231-30 * (11/6 x - 16/5) = 231-30 * (55/30 x - 96/30) = 23155/30 x - 69/30 = 231 : (-30)55/30 x - 69/30 = -231/3055/30 x = -231/30 + 69/3055/30 x = -162/30x = -162/55x = -3 52/55

1 5/6х-3 1/5=231÷-301 5/6х -3 1/5=-7,71 5/6х =-7,7+3 1/5=-7 7/10 +3 2/101 5/6х=-4 5/10х=-4 5/10÷1 5/6х=135/55=2 25/55=2 5/11