how is adding and subtracting rational expressions similar to adding and subtracting simple fractions, and how they are different.

Question

amistre64 · Answer

rational expressions are just glorified fractions ...  you can consider a fraction to be a rational expression of constant functions.  The operations are exactly the same.

amistre64 · Answer

let a(x) = 2
let b(x) = 3
let c(x) = 5
let d(x) = 1

$$\frac{a(x)}{b(x)}-\frac{c(x)}{d(x)}$$
$$\frac{2}{3}-\frac{5}{1}$$