[48+5000:(28:a+6)-14]x[(50-20)+(143-24)]=42316 =>[48+5000:(28:a+6)-14]x(30+119)=42316 =>[48+5000:(28:a+6)-14]x149=42316 =>48+5000:(28:a+6)-14=42316:149 =>48+5000:(28:a+6)-14=284 =>48+5000:(28:a+6)=284+14 =>48+5000:(28:a+6)=298 =>5000:(28:a+6)=298-48 =>5000:(28:a+6)=250 =>28:a+6=5000:250 =>28:a+6=20 =>28:a=20-6 =>28:a=14 =>a=28:14 =>a=2
