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
