Given that ((a)/2)=((b)/3)=((c)/4)=20092010, find ((3a+b-2c)/(c-b+a)).
已知((a)/2)=((b)/3)=((c)/4)=20092010，求((3a+b-2c)/(c-b+a))．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<result>1/3 = around 0.333333</result>