My Fundamental Math Failing This should illicit a chuckle or perhaps despair in humanity. The statement "One silver piece is equivalent to two copper pieces" is not equivalent to the equation "S = 2C" (Where S = silver and C = copper). I cannot for the life of me figure out why. I can work out every other way that to find the number of silver pieces you take the number of copper pieces and divide by two, and therefore it becomes "S = C/2", but I cannot look at the original statement and explain precisely why that makes sense. I'm a physics major.