решите неравенство 20-1/5х>0
1/5x=20
x=20:(1/5)
x=20*5
x=100
0" alt=" 20-\frac{1}{5}x>0" align="absmiddle" class="latex-formula">
-20" alt="-\frac{1}{5}x>-20" align="absmiddle" class="latex-formula">
Ответ: