1)Решите уравнение: 2)Сократите дробь: 3)Решите неравенство:

1) $-\frac{2}{5}x+6=\frac{1}{2}(x-1)\\ -\frac{2}{5}x+6=\frac{1}{2}x -\frac{1}{2}\\ -\frac{2}{5}x-\frac{1}{2}x= -\frac{1}{2}-6\\ -\frac{9}{10}x-= -6\frac{1}{2}\\ x= \frac{65}{9}$ =7

2) [tex]\frac{n^{3}+4n^{2}}{n^{2}-16}= \frac{n^{2}(n+4)}{(n-4)(n+4)} = \frac{n^{2}}{n-4}" alt="\frac{2}{9}[\tex]

2) [tex]\frac{n^{3}+4n^{2}}{n^{2}-16}= \frac{n^{2}(n+4)}{(n-4)(n+4)} = \frac{n^{2}}{n-4}" align="absmiddle" class="latex-formula">

3) x =1