(3x-3)/2+(3x-3)/3+(3x-3)/4+(3x-3)/5+(3x-3)/6+(3x-3)/7+(3x-3)/8+(3x-3)/9+(3x-3)/10=0
(x-1)(1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10)=0
x-1=0
x=1