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determinati numarul natural x care verifica: (37:x+83:x):2=15 va rog muuuuuult!!!!!

Răspuns :

(37÷x+83÷x)÷2=15
37÷x+83÷x=30
(37+83)÷2x=30
120÷2x=30
2x=40
x=20