(x-3):8 1/2=0,2: 4 1/4
4 1/4*(x-3)=8 1/2*0,2 4 1/4x-12 3/4=1 7/10 4 1/4x=1 7/10+12 3/4 4 1/4x=1 14/20+12 15/20 4 1/4x=13 29/20 x=13 29/20:4 1/4 x=289/20*4/17 x=17/5 x=3 2/5