Explicație pas cu pas:
Buna !!
[tex] \frac{3}{7} + x = \frac{7}{7} \\ x = \frac{7}{7} - \frac{3}{7} \\ x = \frac{4}{7} [/tex]
[tex]x + \frac{4}{8} = \frac{7}{8} \\ x = \frac{7}{8} - \frac{4}{8} \\ x = \frac{3}{8} [/tex]
Succes !!;)
✿❀AndreeaBrainly123❀✿
