Originally Posted byxiaozThis is Simple Algebra, all you need to do is solve for d...Originally Posted bysome stupid assignment

divide both sides by

get rid of paranthesis..

Add to both sides..

multiply both sides by

finally, divide both sides by

simplify

and that is what is.

All you need to do is substitute the given numbers into the equation that I gave you, and then you'll know!Originally Posted bysome stupid assignment