Question

Can anyone help , Plz!! it's math!​

Answer 1

Steps:

$Interior +interior=exterior$

but since one of the interiors are missing we will do this.

= $50+X=100$

$-50$            $-50$

the 50 is canceled  so we are left with 100-50 which is 50 so the answer is

$X=50$

Inform me if its wrong.