frictioal force question?

Question

if 2 blocks are to be connected through a line and pulled by a horiztal force, and friction force involvd, one is mass A and one is mass B, and frictional force, find the total force in terms of frictional force, mass A and B.

Answer 1

T - µ(m1+m2)g = 0
µ is the coefficient of friction
T is tension

sooo... m1 = 3(kg), m2 = 5(kg), µ = .5, T = 40(N), g = 10(m/s^2)
since it's not accellerating, this is true.