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изучаемая проблема stresses
math.	the problem under consideration; considered problem; the problem in hand; the problem under investigation; the problem under discussion; the problem being discussed
изучать проблему
gen.	research a problem
econ.	investigate a problem
Makarov.	examine a problem; explore a problem; study an issue
tech.	study a problem

изучаемая проблема: 3 phrases in 3 subjects

General	1
Makarov	1
Mathematics	1