If you wish to see the solution of the equation '3m+2n=20' for 'm' you need to:

Type "3m+2n=20" into 'Algebrator' and click on 'Solve':

Next select 'Solve for 'm' and again click on 'Solve':

If you wish to solve for 'n' select 'Solve for 'n'.

And you will get the solution.

You can obtain an explanation for any step by clicking on it. Please note that you cannot click on the very first expression, which is the original problem. Quite often, several transformations will be performed within the same step. Use the explanation navigation buttons to step through all of them:

If you are not satisfied with the number of solution steps displayed (either too many steps or too few), click on the Options button to adjust the number of steps to be shown.

If you select 'lot of steps' you will get the following solution: