-3(2x−y)−2(4x+1/2y)+2009.
问题描述:
-3(2x−y)−2(4x+
y)+2009. 1 2
答
原式=-6x+3y-8x-y+2009=-14x+2y+2009.
-3(2x−y)−2(4x+
y)+2009. 1 2
原式=-6x+3y-8x-y+2009=-14x+2y+2009.