How can I combine these 2 equations to give an equation for b which does not include m -
b=da/m
a=me^2
solve each one for m, then set these equations equal to each other
b=da/m -----> m = da/b
a=me^2 -----> m = a/e^2
so da/b = a/e^2
b = de^2, the a's cancelled