***Be sure to show all of the step of your calculation without using calculator

In a linear collider, two particles travel toward each other from opposite directions before colliding. If, in the lab reference frame, an electron travels toward the collision point at 2/3 c and a positron travels at 3/4 c, at what speed does the electron travel toward the positron in the positron's reference frame? (Be sure to show all of the steps of your calculation without using a calculator.)

In a linear oollider, two particles travel toward each other from opposite directions before colliding. If, in the lab reference frame, an electron travels toward the collision point at 2l3 c and a positron travels at 3M [3, at what speed does the electron travel toward the positron in the positron's reference frame? ('32 sure to Show all of the steps ofyour calculation without using a calculator.)