化简2-【2(x+3y)-3(x-2y)]的结果是:
问题描述:
化简2-【2(x+3y)-3(x-2y)]的结果是:
答
2-[2(x+3y)-3(x-2y)]
=2-[2x+6y -3x+6y]
=2-[12y-x]
=2-12y-x