Alternate Math Solver can solve equations that contain a variable X towards this variable. The resulting equation will look like X=...

You can solve new as well as save and open saved equations. A help file is available, but there's no help for us and math, so here's an explanation from Alternate Tools.

Example for an equation that contains variable X and numbers only:
8 = (x*25)/(x+25)

Solved towards X it will look like:
<=> x = 11.7647

Equations may also include additional variables (f in the following case):
exp(2*x) = 2*exp(x)+f

Will become:
<=> x = log(1+sqr(1+f))

While solving an equation, the program will also provide the intermediate steps that lead to the solution.

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