哪里能下载井川菜乃花:已知X+Y=1,求3-2X-2Y的值
来源:百度文库 编辑:查人人中国名人网 时间:2024/10/03 20:26:27
X + Y = 1
3 - 2X - 2Y
= 3 - 2(X + Y)
= 3- 2
= 1
3-2X-2Y=3-2(x+Y)=3-2=1
3-2X-2Y
=3-2(x-y)
当X+Y=1时,
3-2(X-Y)
=3-2*1
=3-2
=1
X + Y = 1
3 - 2X - 2Y
= 3 - 2(X + Y)
= 3- 2
= 1
3 - 2X - 2Y
= 3 - 2(X + Y)
= 3- 2
= 1
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