Question

(5x-7)/(x-3)=(4x-3)/x
решите уравнение

Answer 1

х(5х-7)=(х-3)(4х-3)
5х^2-7х=4х^2-3х-12х+9
5х^2-7х=4х^2-15х+9
5х^2-4х^2-7х+15х-9=0
х^2+8х-9=0
д=64-4×(-9)=100
х1=(-8-10)/2=-9
х2=(-8+10)/2=1