Angus,

If you have two formulas, you set up the two formulas to refer to the same
input cell, and subtract them, and use Solver to set the result of the
subtraction to zero by manipulating the input cell.

If you have data, you need to fit a curve first.

HTH,
Bernie
MS Excel MVP


"Angus" wrote in message
...
How to calculate the intersection (price and quantity) of
supply and demand curves, which are drawn by equation (or
actual data of observation)?