What is the specific steps of working out maths questions?
There can be no specific steps to so general a question!
Different math questions require different procedures to arrive at correct answers.
In general terms, it's the same as any other type of problem solving:
1. Determine what you have.
2. Determine what you need.
3. Find the most efficient way to get what you need.
When did Friedrich Gustav Carl Emil Erlenmeyer die?
Friedrich Gustav Carl Emil Erlenmeyer died on 1921-02-08.