Class 7 Maths Chapter 12 (Exercise-12.2)
Here you will find solutions to the exercise- 12.2.
1. Simplify combining like terms:
2. Add:
3. Subtract:
4. (a) What should be added to x2 + xy + y2 to obtain 2x2 + 3xy?
4. (b) What should be subtracted from 2a + 8b + 10 to get -3a + 7b + 16 ?
5. What should be taken away from 3x2 – 4y2 + 5xy + 20 to obtain -x2 – y2 + 6xy + 20 ?
6. (a) From the sum of 3x – y + 11 and -y – 11, subtract 3x – y – 11.
6. (b) From the sum of 4 + 3x and 5 – 4x + 2x2 , subtract the sum of 3x2 – 5x and – x2 + 2x + 5.
