Răspuns :
x-[tex] \frac{4}{12} = \frac{6}{12} [/tex]
x=[tex] \frac{6}{12} + \frac{4}{12} [/tex]
x=[tex] \frac{10}{12} [/tex]
x=[tex] \frac{6}{12} + \frac{4}{12} [/tex]
x=[tex] \frac{10}{12} [/tex]