1.5/y÷x/y-5/x÷y/x=5/xy2.1/x²-y²÷﹙1/x-y - 1/x+y﹚=2y 3.x-1/x÷﹙1-1/x﹚=14.﹙1-1/x-1﹚÷1/2﹣2-x=15.﹙1+4/a-2﹚÷a/a-26.3-a/2b÷a/b×b/aORZ ORZ ORZ ORZ关于第二题= =我真心打对了,
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![1.5/y÷x/y-5/x÷y/x=5/xy2.1/x²-y²÷﹙1/x-y - 1/x+y﹚=2y 3.x-1/x÷﹙1-1/x﹚=14.﹙1-1/x-1﹚÷1/2﹣2-x=15.﹙1+4/a-2﹚÷a/a-26.3-a/2b÷a/b×b/aORZ ORZ ORZ ORZ关于第二题= =我真心打对了,](/uploads/image/z/1676386-10-6.jpg?t=1.5%2Fy%C3%B7x%2Fy%EF%BC%8D5%2Fx%C3%B7y%2Fx%EF%BC%9D5%2Fxy2.1%2Fx%26%23178%3B%EF%BC%8Dy%26%23178%3B%C3%B7%EF%B9%991%2Fx%EF%BC%8Dy+%EF%BC%8D+1%2Fx%EF%BC%8By%EF%B9%9A%EF%BC%9D2y+3.x%EF%BC%8D1%2Fx%C3%B7%EF%B9%991%EF%BC%8D1%2Fx%EF%B9%9A%EF%BC%9D14.%EF%B9%991%EF%BC%8D1%2Fx%EF%BC%8D1%EF%B9%9A%C3%B71%2F2%EF%B9%A32%EF%BC%8Dx%EF%BC%9D15.%EF%B9%991%EF%BC%8B4%2Fa%EF%BC%8D2%EF%B9%9A%C3%B7a%2Fa%EF%BC%8D26.3%EF%BC%8Da%2F2b%C3%B7a%2Fb%C3%97b%2FaORZ+ORZ+ORZ+ORZ%E5%85%B3%E4%BA%8E%E7%AC%AC%E4%BA%8C%E9%A2%98%3D+%3D%E6%88%91%E7%9C%9F%E5%BF%83%E6%89%93%E5%AF%B9%E4%BA%86%EF%BC%8C)
1.5/y÷x/y-5/x÷y/x=5/xy2.1/x²-y²÷﹙1/x-y - 1/x+y﹚=2y 3.x-1/x÷﹙1-1/x﹚=14.﹙1-1/x-1﹚÷1/2﹣2-x=15.﹙1+4/a-2﹚÷a/a-26.3-a/2b÷a/b×b/aORZ ORZ ORZ ORZ关于第二题= =我真心打对了,
1.5/y÷x/y-5/x÷y/x=5/xy
2.1/x²-y²÷﹙1/x-y - 1/x+y﹚=2y
3.x-1/x÷﹙1-1/x﹚=1
4.﹙1-1/x-1﹚÷1/2﹣2-x=1
5.﹙1+4/a-2﹚÷a/a-2
6.3-a/2b÷a/b×b/a
ORZ ORZ ORZ ORZ
关于第二题= =我真心打对了,
1.5/y÷x/y-5/x÷y/x=5/xy2.1/x²-y²÷﹙1/x-y - 1/x+y﹚=2y 3.x-1/x÷﹙1-1/x﹚=14.﹙1-1/x-1﹚÷1/2﹣2-x=15.﹙1+4/a-2﹚÷a/a-26.3-a/2b÷a/b×b/aORZ ORZ ORZ ORZ关于第二题= =我真心打对了,
1题:5/x-5/y=5/xy
(5y-5x)/xy=5/xy
5y-5x=5
y-x=1
y=1+x
2题同1楼.
3题:x-1/x÷(1-1/x)=1
x-1/x÷(x-1)/x=1
x-1/(x-1)=1
(x²-x-1)/x-1=1
x²-x-1=x-1
x²-2x=0
x1=0(舍去),x2=2
4题:-2/x-2-x=1
2/x+x+3=0
x²+3x+2=0
(x+1)(x+2)=0
x1=-1,x2=-2
5题:原式=(1+4/a-2)÷1-2
=1+4/a-4
=4/a-3
6题:原式=3-a/2b×b/a×b/a
=3-b/2a
加减乘除你不会啊?
这根本又不难啊
大将由 大将由
直接崩溃
- - , 打酱油 ~~ 我数学最差
1.5/y÷x/y=5/x 5/x÷y/x=5/y 5/x-5/y=(5y-5x)/xy=5/xy 所以y-x=1
1.y-x=1(更正下,我看花眼了,不好意思)
2.第二题你写的有问题?除数怎么能是0?
3.x=2 x=-1
4.x=-1 x=-2
5.不知道要干啥
6.不知道要干啥