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0,3[4,15÷0,415-0,2(5,6-0,3×0,4)]

Răspuns :

0,3[4,15:0,415-0,2(5,6-0,3×0,4)]
=0,3[10-0,2(5,6-0,12)]
=0,3(10-0,2×5,48)
=0,3(10-1,096)
=0,3×8,904
=2,6712