1. add the factors in the parentheses together first (275+192) - end up with 467
2. add 622 and 467 (end up with 1,089)
3. subtract 513 from both sides of the equation
4. you will end up with the equation of (259+x) = 576
5. subtract 259 from both sides of the equation
FINAL ANSWER
x = 317
hope this helps:)