1250·x/(x-2)+100x+60000/(x-2)+30000=1250(x-2+2)/(x-2)+100(x-2+2)+60000/(x-2)+30000=[1250(x-2)+2500]/(x-2)+100(x-2)+200+60000/(x-2)+30000=1250+2500/(x-2)++100(x-2)+60000/(x-2)+30200= 31450+100(x-2)+62500/x-2