〈4x-2y〕-〖-〔-2y-x〕+〔x-y〕〗-5x
=〈4x-2y〕-〖2y+x+x-y〗-5x
=〈4x-2y〕- (y+2x)-5x
=〈4x-2y〕- y-7x
=-3x-3y
=-3(x+y)
怎么化简代数式如〈4x-2y〕-〖-〔-2y-x〕+〔x-y〕〗-5x〖〗是中括号怎么化简2x^2y+2xy-[3x^2
〈4x-2y〕-〖-〔-2y-x〕+〔x-y〕〗-5x
=〈4x-2y〕-〖2y+x+x-y〗-5x
=〈4x-2y〕- (y+2x)-5x
=〈4x-2y〕- y-7x
=-3x-3y
=-3(x+y)