The range would be between 2000 and 3000 PSI.
Explanation:
2500 PSI - 500 PSI = 2000 PSI
2500 PSI + 500 PSI = 3000 PSI
Hope this helps :)
The common denominator is
10 x 5 = 50
25 x 2 = 50
so the common denominator is 50
Anything in the parenthesis will go first cause they bit greedy so
(14+7)=21 then you have (8+7)=15
so you do
8x21=168 then + 15 = 183