Найду корень уравнения: 10(2-х) +11х=-3х
10*(2 - x) + 11*x = -3*x
10*(2-x)+11*x = -3*x
10*2-10*x+11*x = -3*x
20 + x = -3*x
x = -20 / (4)
x1 = -5
x1 = -5.0