问题
计算题
化简:
(4x-2y)-[5x-(8y-2x-x-y)]+x。
答案
解:原式=4x-2y-[5x-(8y-2x-x-y)]+x=4x-2y-[5x-(7y-3x)]+x
=4x-2y-(5x-7y+3x)+x
=4x-2y-(8x-7y)+x
=4x-2y-8x+7y+x
=5y-3x。
化简:
(4x-2y)-[5x-(8y-2x-x-y)]+x。
解:原式=4x-2y-[5x-(8y-2x-x-y)]+x=4x-2y-[5x-(7y-3x)]+x
=4x-2y-(5x-7y+3x)+x
=4x-2y-(8x-7y)+x
=4x-2y-8x+7y+x
=5y-3x。