Question 14821
3/5n-4=56
First  add 4 to both sides;
{{{3/5}}}n-4+4=56+4
{{{3/5}}}n=60
Now multiply each side by the inverse of {{{3/5}}} which is {{{5/3}}};
{{{3/5}}}n*{{{5/3}}}=60*{{{5/3}}}
n={{{300/3}}}
n=100
Don't forget to check;
{{{3/5}}}(100)-4=56
{{{300/5}}}-4=56
60-4=56
Hope you get it
=)