Explanation:
x + 
x + x - 1 
 —————————--------------
 x 
Simplify 

(((3 • (x3)) + 5x) - 
) + 1 
3.1 Subtracting a fraction from a whole 
 Rewrite the whole as a fraction using x as the denominator :
 3x^3 + 5x (3x^3 + 5x) • x 
 3x^3 + 5x = ———————— = —————————————— 
 1 x 
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole 
 Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
4.1 Pull out like factors : 
 + 5x 
 x}{x}[/tex]
5.1 Adding a whole to a fraction 
 
Rewrite the whole as a fraction using x as the denominator : 
 
 1 1 • x 
 1 = — = ————— 
 1 x