Fill a suitable number in the blank.$-30 + ..... = -14$.

Given : 

$-30 + .... = -14$

To do :

We have to fill the blank with a suitable number.

Solution :

Let the number in the blank be x.

This implies,

$-30 +x = -14$

$x = -14+30$

$x= 30-14$

$x = 16$

Therefore,

$-30 + 16 = -14$

The suitable number is 16.