TeXworks is one of the simple and commonly used interface to write and compile LaTeX document. However you can use any LaTeX editor. If you are facing any issues on how to write maths equations in LaTeX, kindly try online LaTeX equation editors. Copy that code and paste in your Document.
MikTeX is nothing but a free distribution of LaTeX on the Windows operating system, while TeXworks is a LaTeX IDE that you use for writing your documents in LaTeX.
Any LaTeX IDE that you use, you would need to typeset mathematic equations manually. However, there could be wizards provided by some IDEs. TeXstudio, Kile may provide some wizards. However, we use TeXstudio.