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Addition and Subtraction of Algebraic Expressions

To add or subtract two or more algebraic expressions arrange their terms and combine the like terms of each expression to find their sum or difference accordingly.

When we have three expressions, write each expression in separate rows, with like terms one below the other.
 

Example


Arrange the terms x2, x and constant separately.

Solution
 

 

Example

Add

In the third row terms in yz & y are absent. For our convenience we put zero for those terms.

Solution

 

Example: Subtract




Add the following:
 

(i)

(ii)
 

Solution
 

 


 

 

Example : Subtract


Subtracting
 


 





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