Question 1177890


{{{9=(175/(n-4))-(80/n)}}}

restrictions on the variable{{{ n}}}:

as you can see, the variable{{{ n}}} is in denominator and denominator {{{cannot}}} be equal to {{{zero}}}

it will be be equal to {{{zero}}} if {{{ n=0}}} or be equal to {{{n-4=0}}}=>
{{{n=4}}}

so, restrictions on the variable{{{ n}}} are: {{{ n<>0}}} and {{{n<>4}}}