NCERT Exemplar Solutions
Class 6 - Mathematics - Unit 3: Integers - Fill in the Blanks

Question 47

1. Start with the equation:
   [ x + (-11) + 111 = 130 ]
2. Add the known numbers:
   [ (-11) + 111 = 100 ]
3. Now the equation becomes:
   [ x + 100 = 130 ]
4. Subtract 100 from both sides:
   [ x = 130 - 100 ]
5. Calculate the result:
   [ x = 30 ]

So, the blank is 30.