I could fix your worksheet (see attached).

However, I agree that your worksheet should have worked. I expect the solve command to produce the same result as the isolate command. This observation should be investigated by an expert (I have send a software change request).

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/zadanie_z_jednostakim_-_problem-_using_isolate.mw .

Download zadanie_z_jednostakim_-_problem-_using_isolate.mw

.

Alternatively, you can take advantage of Maples ability to handle equations.

In the attached example, no assignment statements “:=” are used for parameters. Instead, general analytic solutions are derived and parameters for a particular solution are defined as equations (as you would write it by hand).

Using this workstyle, no re-execution of the whole worksheet is required when parameters are changed. This is an advantage if the worksheet becomes large or if parameter studies are done. Also, numerical artifacts or missmatch of units, as in your case, are less likely to impact calculations and results.

Maple Worksheet - Error

Failed to load the worksheet /maplenet/convert/Answer_on_-_Solving_equation_with_units_problem.mw .
 

Download Answer_on_-_Solving_equation_with_units_problem.mw