解:∵│X-2│+(Y+2/3)平方=0 ∵ |X-2|>=0 (y+2/3)平方>=0 ∴ X-2=0 y+2/3=0 ∴ X=2 Y=-2/3 X+Y=4/3 参考楼上
解:∵│X-2│+(Y+2/3)平方=0 ∴ X-2=0 y+2/3=0 ∴ X=2 Y=-2/3 X+Y=4/3
答案 3/4
3/4