Two parallel infinite line charges with linear charge densities $+\lambda \text{C/m}$ and $-\lambda \text{C/m}$ are placed at a distance of $2R$ in free space. What is the electric field mid-way between the two line charges?

[Image showing two parallel line charges and the electric field vectors at the midpoint]The electric field due to an infinite line charge at distance $r$ is $E=\frac{\lambda }{2\pi {ϵ}_{0}r}$.At the midpoint, $r=R$ for both lines.Field due to $+\lambda$ line ($E_1$): points away from it (toward the negative line).Field due to $-\lambda$ line ($E_2$): points toward it (same direction as $E_1$).
$$E_{net}=E_1+E_2=\frac{\lambda }{2\pi {ϵ}_{0}R}+\frac{\lambda }{2\pi {ϵ}_{0}R}$$
$$E_{net}=\frac{2\lambda }{2\pi {ϵ}_{0}R}=\frac{\lambda }{\pi {ϵ}_{0}R}$$