48/(20+х)+48/(20-х)=5

Question

48/(20+х)+48/(20-х)=5

Answer 1

48/(20+x)+48/(20-x)=5
48*(20+x)+48*(20-x)-5(20-x)(20+x)
960+48x+960-48x-100+5x(20+x)
960+48x+960-48x-2000-100x+100x+5x(в квадрате)
5x(В квадрате)-80=0
Х-12 и 4