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Rezolvati ecuatia urmatoare: (-1/5)•x+1/2•x+1/10=2/5

Răspuns :

 (-1/5)•x+1/2•x+1/10=2/5
 -x/5+x/2+1/10=2/5
-2x+5x+1=4
3x=3
x=1