Question

一元解方程10*1/x+8*1/(x-4)=1

Answer 1

10*1/x+8*1/(x-4)=1

8/(x-4)=1-10/x

8/(x-4)=(x-10)/x

8x=(x-4)(x-10)

8x=x^2-14x+40

x^2-22x+40=0

(x-2)(x-20)=0

x=2或x=20