2(x+y)+(-5X+2y)去括号合并同类项

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2(x+y)+(-5X+2y)去括号合并同类项2(x+y)+(-5X+2y)去括号合并同类项2(x+y)+(-5X+2y)去括号合并同类项=2x+2y-5x+2y=-3x+4y

2(x+y)+(-5X+2y)去括号合并同类项
2(x+y)+(-5X+2y)
去括号合并同类项

2(x+y)+(-5X+2y)去括号合并同类项
=2x+2y-5x+2y
=-3x+4y