When you need to describe something that is not directly stated but can be deduced from the available evidence, you could use the phrase "to be inferred." However, for the sake of variety in your writing and speaking, it's helpful to have synonyms at your disposal. Some possibilities include "to be extrapolated," "to be concluded," "to be deduced," "to be surmised," "to be gathered," "to be intuited," and "to be divined." These all convey the sense of arriving at a conclusion through reasoning and observation, without the need for explicit statements or directions. By using different words, you can add richness and nuance to your language, and avoid repetition.