First, they must have a common denominator.
\(2(\frac{4x-1}{5})+5(\frac{x+4}{2})=3\)
\(\frac{8x-2}{10}+\frac{5x+20}{10}=3\)
Now you can combine the two.
\(\frac{8x-2+5x+20}{10}=3\)
Combine like terms.
\(\frac{13x+18}{10}=3\)
To cancel the fraction, multiply both sides by 10.
\(13x+18=30\)
Subtract 18 from both sides.
\(13x=12\)
Divide each side by 13.
\(x=\frac{12}{13}\)