Respuesta :

Step-by-step explanation:

let the no. be x

x+91+5623+911=6630

or,x+6625=6630

or,x=6630-6625

ans=5

If we have +91+5623+911=6630

Then,91

+5623

+911

=6625

Now,sub 6625 from 6630

6630 -6625

= 5

Now,add 6625and 5

6625+5

=6635

therefore,we have to +5 to get ans:6630