2乘以[1减1/3乘以（x减3分之1加x）]=3乘以[x/6减1/2乘以（2x减3分之10减7x）]

解:2*[1-1/3(2x-1/3)]=3*[x/6-1/2*(-5x-10/3)]
2*[1-2/3+1/9]=3*[x/6+5/2x+5/3]
2*[1-2/3*x+1/9]=x/6+5/2*x+5/3
2-4/3x+2/9=x/2+5/2x+5
8x-4/3*x=3-2/9
20/3*x=25/9
180=75x
x=2.4