4x + 3 + (-3x) + 7x - 6x

The expression 4x + 3 + (-3x) + 7x - 6x can be simplified as follows:

First, combine like terms:
4x - 3x + 7x - 6x + 3
Simplifying further:
(4 - 3 + 7 - 6)x + 3
(2)x + 3
2x + 3
So, the simplified expression is 2x + 3.