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30:3:3×5+35:5+109×4-4×100

Răspuns :

30:1•5+7+436-400=
=30:5+443-400=
6+43
49
30:3:3x5+109x4-4x100=10:3x5+109x4-4x100=3,1x5+109x4-4x100=15,1+109x4-4x100=15,1+436-400=451,1-400=51,1