0,8 (9+2x)=0,5(2+3x)
7.2+1.6x=1+1.5x 1.6x-1.5x=1-7.2 0.1x=-6.2 X=-62
7,21+ 1.6х=1+1.5х 1.6х-1.5х=1-7.2 0.1х=-6 Х=-62