Найду корень уравнения: 5/6*x+16=4/9*x+9
5*x 4*x --- + 16 = --- + 9 6 9
5/6*x+16 = 4/9*x+9
x = -7 / (7/18)
сумма
0 - 18
=
-18
произведение
1*-18
x1 = -18
x1 = -18.0