Question 29548
The problem which you have give is a bit confusing, I need some clarification,

In you first problem i.e n+3/3-n/4=n-2/5,,,here (3-n)is divided by 4 or n is divided my 4 (similar clarification needed where ever you put "/" sigh ),,,when two or more variables are multiplied or divided by another variable ,,please always put those variables in brackets.

is you problem looks like this (n+3)/(3-n)/4=(n-2)/5

Contact again with proper format