How do you simplify equations; ex.

8x+3(-4x+5)2x

Caxn someone explain not just post the answer.thanx(:

8X + 3(-4X + 5)2X,

8X + 6X(-4X + 5),
8X - 24X^2 + 30X,
-24X^2 + 38X,
Factor out 2X:
2X(-12X + 19).