function solve in matlab 2018

hello my name is iker, i'm from Spain, i have one question for us, why don't the function solve give me a solution to solve ecuation systems, the comand window said me "error", i intalled my software Matlab 2018 b with my campus licence of university of cantabria

[madhan ravi]

you forgot to upload the code

Answer 1

[Steven Lord]

If the error you receive is that the solve function is an undefined function or variable, check the output of the ver function to see if you have Symbolic Math Toolbox installed. If you do not have that toolbox, you will not be able to use that function.

If you receive a different error, please show us the full text of the error and/or warning messages you receive (all the text displayed in red or orange) as well as a small sample of code with which you can reproduce the error.