5х 5 5 х 1. 7х-5(2х+1)=5х+15. 1/3х-1 5. 5/3=Х:15. 1/7х=3. 5х+8/х+1-х-4/х+1 0. 4/(Х-3)+1/Х= 5/(Х-2). 5/Х=2-3/Х-2. 1/3 Х +4 Х. А2х3. 2-3х/6+х+5/3 2/3. 3/Х/-5=4 /Х-2/-3=1. У=1/3х2. (1/Х-1-Х+1/Х^2+Х+1):(1+1/Х^3-1). -(Х+1)=-2 1/3. 1.5Х+2 1/3=2.5. У=1/3*(Х-5)^2. 25-4(4х-3)=3(5х+2)