I have already completed the from_char and parse_equation function, but I need help with the solve and solve all functions.

- Complete the solve function. You will need to call the parse_equation function to handle the string input. The result should be a tuple containing two floating point numbers and an 0peration. If the string input was not parsed successfully, you should return Err(()). Else, you should return 0k(x) where x is the result of the expression string. Hint: you can use match to "match" on the Operation enum. You can read more about match here. - Complete the solve_all function. You will need to open a File using the file_path passed in. If there is an error opening the file, you should return Err(()). Otherwise, you should read the file line by line and call the solve function on each line. You should return a Result ,()> containing the sum of all the successful results of each valid line