( 3x-1.5)/0.2+8x=(0.2x-0.1)/0.09+4
0.09（3x-1.5)+0.144x=0.2(0.2x-0.1)+0.072
0.27x-0.135+0.144x=0.04x-0.02+0.072
0.414x-0.04x=0.052+0.135
0.374x=0.187
x=0.5