Question

关于初二数学试题解答方法X－1 1 ÷（X－ ） X X

Answer 1

[（x-1)/x]÷(x-1/x)

=[(x-1)/x]÷(x²-1)/x

=[(x-1)/x]×[x/(x-1)(x+1)]

=1/(x+1)