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Rezolvaţi in mulţimea numerelor rationale pozitive urmatoarele ecuatii: a) ×:16/15=5/8, b) 3(×+1/5)=2.
Ajutatima va rog!!


Răspuns :

x*15/16=5/8, x=5/8*16/15=2/3

x+1/5=2/3, x=2/3-1/5, x=7/15