(5Y+1)/6=(9Y+1)/8-(1-Y)/3

来源：学生作业帮助网编辑：作业帮时间：2024/11/09 06:20:02

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(5Y+1)/6=(9Y+1)/8-(1-Y)/3
(5Y+1)/6=(9Y+1)/8-(1-Y)/3

(5Y+1)/6=(9Y+1)/8-(1-Y)/3
（5y＋1）÷6＝（9y＋1）÷8－（1－y）÷3
[（5y＋1）÷6]×24＝[（9y＋1）÷8－（1－y）÷3]×24
4×（5y＋1）＝3×（9y＋1）－8×（1－y）
20y＋4＝27y＋3－8＋8y
20y－27y－8y＝3－8－4
－15y＝－9
y＝3／5

Y=3/5

你知道吗?用24来做6,8,3的最小公倍数.
(5y+1)/6=(9y+1)/8-(1-y)/3
解: 24[(5y+1)/6]=24[(9y+1)/8-(1-y)/3]
20y+4 =(27y+3)-(8-8y)
20y-27y-8y=3-8-4
-15y=-9
y=-9/-15
y=0.6或5/3

y (3y^2+8y-3)-6y(3y+2y-1)+9y [T,Y]=ode45(@rigid,[0 1],[rand(15,1)]);plot(T,Y(:,1),'-',T,Y(:,2),'-.',T,Y(:,3),'.',T,Y(:,4),'-',T,Y(:,5),'-.',T,Y(:,6),'.',T,Y(:,7),'-',T,Y(:,8),'-.',T,Y(:,9),'.',T,Y(:,10),'-',T,Y(:,11),'-.',T,Y(:,12),'-.',T,Y(:,13),'.',T,Y(:,14),'-',T,Y(:,15),'.') (y-2)(y^2-6y-9)-y(y^2-2y-15),其中y=1/2.先化简再求值. (3y-1)/4-1=(5y-7)/6 9y-3-3=10y-14 9y-10y=-14+3+3 -y=-8 y=8 已知(1/x)-(1/y)=5,求(6x+7xy-6y)/(8y-9xy-8y) (5y+1)÷6=(9y+1)÷8-(1-y)÷3 5y+1/6=9y+1/8-1-y/3 (5Y+1)/6=(9Y+1)/8-(1-Y)/3 解一元一次方程5y+1/6 = 9y+1/8 - 1-y/3 y- 2y+1/2=9- 8-y/4 y-2y+1/2=9-8-y/4 y''-5y'+6y=3x+1通解通分 y+3/y*y-6y+9,1/2y+6,y-1/y*y-9 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 化简求值计算：[(y+1)/(y^2-4y+3)减去(y-2)/(y^2-6y+9)]除以(y-5)/(y-1) 常微分方程的通解dy/dx=(x-y+1)/(x+y-3)y^4=2y^n+y=0y''+6y'+9y=e^(-3x)y''+y'-2y=4e^(2x)