Complex sentence: The role of symmetry in physics is important in simplifying solutions to many problems, spacetime symmetries finding ample application in the study of exact solutions of Einstein's field equations of general relativity.
Split into simpler sentences: The role of symmetry in physics is important, for example, in simplifying solutions to many problems. Spacetime symmetries are used to simplify problems and find ample application in the study of exact solutions of Einstein's field equations of general relativity.