x+17=3(x+13),2x-11.2=0.6x,2.5x-2.17=21.9-5.8x,8（x-1.5）=x+0.6,2（0.5-x）+6=3x-2.53,用方程解

x+17=3(x+13),x+17=3x+39x-3x=39-17-2x=22x=22/-2x=-112x-11.2=0.6x,2x-0.6x=11.21.4x=11.2x=11.2/1.4x=82.5x-2.17=21.9-5.8x,2.5x+5.8x=21.9+2.178.3x=24.07x=24.07/8.03x=2.98（x-1.5）=x+0.6,8x-12=x+0.68x-x=0.6...