C=3.14d solve for d
you would divide both sides by 3.14, to get d by itself. so c/3.14=d
\(3.14d=c\ \ \ \ |divide\ both\ sides\ by\ 3.14\\\\d=\dfrac{c}{3.14}\\\\d=\dfrac{100c}{314}\\\\d=\dfrac{50c}{157}\)