Steps to add or Subtract Algebraic Expression
Add 15p2 – 4p + 5 and 9p – 11
Write down the expressions in separate rows with like terms in the same column and add.
Example Subtract 5a2 – 4b2 + 6b – 3 from 7a2 – 4ab + 8b2 + 5a – 3b.
For subtraction also write the expressions in different rows. But to subtract we have to change their signs from negative to positive and vice versa.