2(x+y)+(-5X+2y)去括号合并同类项
问题描述:
2(x+y)+(-5X+2y)
去括号合并同类项
答
=2x+2y-5x+2y
=-3x+4y
2(x+y)+(-5X+2y)
去括号合并同类项
=2x+2y-5x+2y
=-3x+4y