Question

помогите решить уравнение : Iх+0.2I / (-38.4) = -0.7 / 8.4
х+0.2 в модуле

Answer 1

$dfrac{|x+0.2|}{-38.4} = dfrac{-0.7}{8.4} \\\|x+0.2|=dfrac{-0.7cdot (-38.4)}{8.4}\\|x+0.2|=3.2\\1) quad x<-0.2\\-x-0.2=3.2\ \ x=-3.4\\2)quad x geq -0.2\\x+0.2=3.2\\x=3$

Ответ х=3, х=-3.4