(3x-1.5)/0.2+8x=(0.2x-0.1)/0.09+4
(30x-15)/2+8x=(20x-10)/9+4
9(30x-15)+8x*18=2(20x-10)+4*18
270x-135+144x=40x-20+72
414x-40x=52+135
374x=187
x=1/2
x=0.5