You can put this solution on YOUR website! Given that a>b, solve for x in terms of a and b:
b(x+3)>ax+7b
------
bx + 3b > ax + 7b
---
Note:: a-b is positive
-----
ax - bx < 3b-5b
----
(a-b)x < 3b-5b
------
x = (3b-5b)/(a-b)
---------------
Cheers,
Stan H.
---------