Question

решите уравнение
x+8/x-0,4=x+8/0,4x-4

Answer 1

(x+8)(0.4x-4)=(x+8)(x-0.4)
0.4x-4=x-0.4
0.4x-x=-0.4+4
-0.6x=3.6
x=3.6/-0.6=-6
x=-6