x-1/3[x-1/2x-2]=4x/9-2 谁能帮帮忙么`..
问题描述:
x-1/3[x-1/2x-2]=4x/9-2 谁能帮帮忙么`..
答
x-1/3(1/2x-2]=4x/9-2
x-x/6+2/3=4x/9-2
5x/6-4x/9=-2-2/3
7x/18=-8/3
x=-48/7