# Adding and Subtracting Rational Expressions

posted by .

Can someone PLEASE show me how to solve these?I never could understand these types of equetions.(3x/10)+(9x/10)
(n-2/n+4)+(8/[n+4])
(5m+8/[m-1]) - (m-3/[m-1])
(x^2/[x-1]) - (1/[x-1])
(4x+y/[2x+3y])-(2x -2y/[2x+3y])
(x^2+3x+2/[x^2-16] + (3x++6/[x^2-16])
7/(x-5) - (2+x/[x-5])

Since they are not equations, they cannot be "solved," but they can be simplified.

(n-2/n+4)+(8/[n+4])

Since both have a denominator of n+4, the numerators can be combined.

(n-2+8)/(n+4) = (n+6)/(n+4)

The same process can be used with the other expressions.

I hope this helps. Thanks for asking.

## Similar Questions

1. ### Adding and Subtracting Rational Expressions

Iwouldhighly appreciate it if someone could solve these forme.I think I typed themout correctly. What I'm looking at,for instance,the first one,is displayed 5n over 3 times 4n over 3 1.5n/3-4n/3 2.3x/10+9x/10 3.n-2/n+4+8/n+4 4.5m+8/m-1 …
2. ### Adding and Subtracting Rational Expressions

I would highly appreciate it if someone could solve these forme.I think I typed them out correctly. (n-2/n+4)+(8/[n+4]) (5m+8/[m-1]) - (m-3/[m-1]) (x^2/[x-1]) - (1/[x-1]) (4x+y/[2x+3y])-(2x -2y/[2x+3y]) (x^2+3x+2/[x^2-16] + (3x++6/[x^2-16]) …
3. ### Solving Equations with Rational Expressions

Can someone please show me how to solve these for me?
4. ### math

Why is it important to simplify radical expressions before adding or subtracting?
5. ### Math117

Why is it important to simplify radical expressions before adding or subtracting?
6. ### Math

When adding and subtracting rational expressions, why do you need a LCD?
7. ### math

Why is it important to simplify radical expressions before adding or subtracting?
8. ### MATH

WHY IS IT IMPORTANT TO SIMPLIFY RADICAL EXPRESSIONS BEFORE ADDING OR SUBTRACTING?
9. ### Math

Adding and subtracting rational expressions. 1/6m + 2/5m +4/m then simplify
10. ### Math

Adding and subtracting rational expressions. 3x/x^2+x-12 - x/x^2-16

More Similar Questions