Electric field caused by two point charges

What is the electric field at position,

 [μm],

caused by two point charges $q_1$ and $q_2$?

Point charge $q_1=$  × 10-12 [C] is located at

 [μm],

and point charge $q_2=$  × 10-11 [C] is located at

 [μm].

What is the electric field at position $\vec{r}$?

$\vec{E} = $ $\hat{x} + $ $\hat{y} + $ $\hat{z}$ [V/m] 

Physical constants