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Calculati x din proportia :
2x+1 / 4x+3= 1/3


Răspuns :

2x + 1/4x + 3 = 1/3 (=) (2x + 1)*3 = 4x + 3 (=) 6x + 3 = 4x + 3 (=) 2x = 0 (=) x= 0