attack vs damage ratios

[richardfs]

Im curious to find out the actual mathmatic equations for the in game calc of damage dealt in relation to armor and absorption. how jewlry is a benfit for absorption and if the absorption rating is deducted from an attack off the front end of the attack. since the same attack on the same mob can vary, i would llike to know the formula in order to build my char accordingly. btw i wasnt smart enough to sp farm, didnt hav the patience to sit in the den and slaughter for weeks on end (lvl 30 current)