Before my TI graphing calculator died I used to use the 'Solver' function that allowed one to define variables then input knowns and solve for the unknown. Where do I find that
![gratis - Free alternative to step-by-step-solution feature of Wolfram|Alpha Pro? - Software Recommendations Stack Exchange gratis - Free alternative to step-by-step-solution feature of Wolfram|Alpha Pro? - Software Recommendations Stack Exchange](https://i.stack.imgur.com/sSSqH.png)
gratis - Free alternative to step-by-step-solution feature of Wolfram|Alpha Pro? - Software Recommendations Stack Exchange
![What to Expect: Calculating Expected Values with Probability Distributions in Wolfram|Alpha—Wolfram|Alpha Blog What to Expect: Calculating Expected Values with Probability Distributions in Wolfram|Alpha—Wolfram|Alpha Blog](https://content.wolfram.com/uploads/sites/35/2012/08/roll-2-dice.png)