x ÷ x-1的差加1等于2x-1除以x 求x
问题描述:
x ÷ x-1的差加1等于2x-1除以x 求x
答
x/(x-1)+1=(2x-1)/x
[x² +x(x-1)]/x(x-1)=(2x-1)(x-1)/x(x-1)
当x(x-1)≠0
2x²-x=(2x-1)(x-1)
x=x-1无解