Simplify variable expressions
To simplify an algebraic expression generally means to remove symbols of grouping and combine like terms.
Simplify 5x+(x7)2
5x+(x7)2 
= 
5x+2x14 

= 
7x14 
Simplify 3(y5)(2y7)
3(y5)(2y7) 
= 
3y152y+7 

Distributive property 

= 
(3y2y)+(15+7) 

Group like terms 

= 
y8 

