y-y-1/2=3-y+2/5
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y-y-1/2=3-y+2/5y-y-1/2=3-y+2/5y-y-1/2=3-y+2/5两边乘1010y-5(y-1)=30-2(y+2)5y+5=26-4y5y+4y=26-59y=21y=7/3
y-y-1/2=3-y+2/5
y-y-1/2=3-y+2/5
y-y-1/2=3-y+2/5
两边乘10
10y-5(y-1)=30-2(y+2)
5y+5=26-4y
5y+4y=26-5
9y=21
y=7/3
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y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
y(y-2)²-y(y+3)(y-5) y=1/2 化简求值
解方程3y^2-(2y+1)(y-2)=(y-5)(y-1)
2(y-4)(3y+2)-5(-3y+7)(y+1),其中y=-1
解方程：3y^2-(2y+1)(y-1)=(y-5)(y+1)
解方程：3y²-(2y+1)(y-2)=(y-5)(y+1)
y-(y-1)/2=1-(2y-3)/5
y-y-1/2=3-y+2/5
y-1/y-2 - y-3/y-4=y-2/y-3 - y-4/y-5一共有四个分数哦~希望可以快一点~谢谢!
y (3y^2+8y-3)-6y(3y+2y-1)+9y
解3y+5/3y-6=1/2+5y-4/2y-4
4(2y+5)-3y=7(y-5)+4(2y+1)
方程5y（2y-3）=（y+2）（y-2）-1
(x-y)/(x+y)=3求( 3x-2y-1)/(x+y-5)
（3y-1)(2y-3)+(6y-5)(y-4)=?xie
（3y-1)(2y-3)+(6y+5)(y-4)=?
4（5—2y)+7(y+1)=3(4y-1)+17求y