[(x+52.9)*5-3.9343]/0.5-10x=521.1314(5x+264.5-3.9343)/0.5-10x=521.13145x/0.5+264.5/0.5-3.9343/0.5-10x=521.131410x+529-7.8686-10x=521.131410x-10x+529-7.8686=521.1314529-7.8686=521.1314可以看到:x经过上...