Question 495929
(n/2)-1/3=13/6  First, lets get rid of the fractions.  We do this by multiplying each term in the equation by the lowest common denominator which is 6, sooo
6*(n/2)-6*(1/3)=6*(13/6) and this gives us
3n-2=13 add 2 to each side
3n-2+2=13+2 collect like terms
3n=15 divide each side by 3
n=5
CK
(5/2)-1/3=13/6   we could multiply by the lowest common denominator again or we could just add the fractions.  Lets add the fractions:
5/2=15/6  (multiply numerator and denominator by 3)
1/3=2/6  (multiply numerator and denominator by 2), sooooo
15/6-2/6=13/6
13/6=13/6

Note that I used parens for some of the fractions (eg (n/2)) just to make sure there is no confusion.
n/2-1/3 could be read as n/(2-1/3) or (n/2)-1/3
Parens helps to underscore that some expressions are one quantity.


Hope this helps----ptaylor