Question

解55/x=(x-2)+(x-1)/x

Answer 1

55/x=(x-2)+(x-1)/x

两边同乘x,得

55=x(x-2)+(x-1)

即

55=x^2-2x+x-1

即

55=x^2-x-1

即

x^2-x=56

即

x(x-1)=56

解得x=8或x=-7