解55/x=(x-2)+(x-1)/x

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

解55/x=(x-2)+(x-1)/x
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

等式两边各乘以x,55=(x-2)+(x-1)
55+3=2x
x=29