Question

Need help with adding/subtracting fractions!!! Please help

Answer 1

What fractions specifically?

Answer 2

If you don't have a specific problem, but want some help, see
https://www.khanacademy.org/math/pre-algebra/fractions-pre-alg/fractions-unlike-denom-pre-alg/v/adding-and-subtracting-fractions
and the other videos in this section.

Answer 3

4+a/a-3+4/5=

Answer 4

do you mean
\[ \frac{4+a}{a-3} + \frac{4}{5} \]
?
if so , the common denominator is 5(a-3)
multiply the first fraction by 5/5
and multiply the 2nd fraction by (a-3)/(a-3)
like this:
\[ \frac{4+a}{a-3}\cdot \frac{5}{5} + \frac{4}{5}\cdot \frac{a-3}{a-3} \]
both fractions now have the same denominator, which is, 5(a-3)
add the numerators.