1/3x+3=(1-1/3)x*1/3+33求解方程过程1/3 x+3=2/3 x*1/3+331/3x+3=2/9 x+331/3x-2/9 x=33-33/9x-2/9 x=301/9x=30x=30÷1/9=30*9=270