Найду корень уравнения: 3,5-х=8(х+2, 8)
7/2 - x = 8*(x + 2.8)
(7/2)-x = 8*(x+2.8)
7/2-x = 8*(x+2.8)
7/2-x = 8*x+8*2.8
x = 18.9 / (-9)
x1 = -2.1