来自李振虎的问题
【化简:5(x-y)+2(x+y)-3(x-y)】
化简:5(x-y)+2(x+y)-3(x-y)
1回答
2020-06-28 05:52
【化简:5(x-y)+2(x+y)-3(x-y)】
化简:5(x-y)+2(x+y)-3(x-y)
5(x-y)+2(x+y)-3(x-y)
=5x-5y+2x+2y-3x+3y
=4x