orang3eph

one thing that really helps me with these, is that the exponents on each side of the equation need to add up to the same number.
ie a^3 x b^4 = c^7 (because 3+4 = 7). or, a x b^6 = c^7 (because a is the same as a^1).

if they don't add up, your equation is wrong somehow, because the time periods don't match.