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Aflati numarul natural x stiind ca x+3/8=3/4

Răspuns :

amplifici 3/4 cu 2
apoi scri: x=6/8-3/8; x=3/8
   
[tex]\displaystyle \\ x+ \frac{3}{8}= \frac{3}{4} \\ \\ x= \frac{3}{4}^{^{(2}} -\frac{3}{8} = \frac{6}{8} -\frac{3}{8} = \frac{6-3}{8} = \boxed{\frac{3}{8}} [/tex]