[nicolewhite]

You should check out this algebra.js project I've been working on for funsies.

  var exp = new Expression("a");
  exp = exp.multiply("b");
  exp = exp.multiply("x");
  exp = exp.add("c");

  console.log(exp.toString());

  exp = exp.evaluateAt({a:5, b:1, c:-1})
  console.log(exp.toString());

  var eq = new Equation(exp, new Expression("y"));
  console.log(eq.toString());

  var x = eq.solveFor("x");
  console.log("x = " + x.toString());

Yields:

  abx + c
  5x - 1
  5x - 1 = y
  x = 1/5y + 1/5

You can play with it here: http://algebra.js.org/

[josdejong]

@nicolewhite algebra.js looks really interesting. I hadn't seen it before. Maybe we can somehow join forces (I'm the author or math.js). If you're interested just drop me a mail or open a discussion on github.

[nicolewhite]

Sure. I just looked at the expression tree you linked to above and it looks like pretty similar functionality.