[tex]\frac{y-x}{x(x-a)}-\frac{y+a}{a(a-x)} =\frac{y-x}{x(x-a)}+\frac{y+a}{a(x-a)}=\frac{(y-x)a+(y+a)x}{ax(x-a)}=\frac{ay-ax+xy+ax}{ax(x-a)} =\frac{ay+xy}{a(x-a)} =\frac{y(a+x)}{ax(x-a)}[/tex]

Ответ:

x(x−a)

y−x

−

a(a−x)

y+a

=

x(x−a)

y−x

+

a(x−a)

y+a

=

ax(x−a)

(y−x)a+(y+a)x

=

ax(x−a)

ay−ax+xy+ax

=

a(x−a)

ay+xy

=

ax(x−a)

y(a+x)