2(10-0.5y)=-(1.5+2)怎么解呀?还有一道：(3y-1)/4-1=(5y-7)/6帮帮忙!谢拉!

2(10-0.5y)=一(1.5y十2) 解方程 2(10-0.5y)=-(1.5y+2) 2×(10-0.5y)=-(1.5y+2) 2(10-0.5y)=-(1.5y+2)要过程 2(10-0.5y)=-(1.5y+2) 一元一次方程,急,2(10-0.5y)=-(1.5y+2) 2(10-0.5)=-(1.5y+2) 2（10-0.5y)=-(1.5+2) 计算 (y-0.3)/2=(0.7y+0.5)/0.5-1.5应该是(y-0.3)/0.2=(0.7y+0.5)/0.5-1.5 解方程：2(10-5y)=-(1.5y+2) y''+2y'+10y=0微分方程的通解 matlab求微分方程数值解ode45出错,怎么办?建立equation.m文件,里面写入：function dy =equation(t,y)dy=zeros(3,1);dy(1)=10^9*0.6*(pi/2+atan((0.5*y(1)+0.5*y(2)+0.5*y(3)+1)^0.3*(1.5*y(1)+1.5*y(2)+1.5*y(3)+1)^0.3*(y(1)^0.6*y(2)^0.4)^0.3- 2y-2.4=0.5y-0.6 f(x,y,z)=(x^2+y^2)^0.5+z^1.5,求 ∂f(x,y,z)/∂y 若2(10-0.5y)与5(1.5y-2)互为相反数,求y值 10+5y+y^2=0 6y^2-11y-10=( ? )(?) x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2