easy / simple, uncomplicated / brief, light, short

(chiefly in mathematics, physics) for simplicity; for the sake of simplicity

ease / simplicity / lightness, brevity

to disassemble, to break down / (chemistry) to resolve (light, a chemical, etc.) / (mathematics) to factor

mathematics (field of study)

disassembly, breaking down / (chemistry) resolution / (mathematics) factorization

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

hydrolysis

hydrolize

(mathematics) pure mathematics