Răspuns:
a)
[tex] \frac{x}{2y} + \frac{y}{2y} = \frac{x + y}{2y} [/tex]
b)
[tex] \frac{m}{2m + 2n} + \frac{1}{1} [/tex]
amplificam a doua fractie cu 2m+2n
[tex] \frac{m}{2m + 2n} + \frac{2m + 2n}{2m + 2n} = \frac{m + 2m + 2n}{2m + 2n} [/tex]
simplificam 2m si 2n
[tex] \frac{m}{1} = m[/tex]
