Also means
solvable
Usage Note
Soluble describes substances that dissolve in liquid (café soluble = instant coffee) and, more formally, problems that can be resolved (un problema soluble). It is invariable for gender. Insoluble is its antonym for both chemistry and figurative uses.
Examples
"El café soluble se disuelve en agua caliente."
Natural Translation
Instant coffee dissolves in hot water.

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