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Inca 2 probleme adica ecuatii

6 a) [(15/4x+1/3) ori 3/11 -1/5] ori 5/6=1/4
7) 5/11 ori {9/2 ori [6/11 ori (4/3- 1/2x)-1/6]-2/5}=1/2
AJUTOR PLS