1/x+1/y=

[LEMARB]

I haven't taken math in over a decade, but i will be starting college math in March 2009.

I can't remember how to get the answer for:

1/x+1/y=

Can anybody help simplify it?

 

[mmm4444bot]

We need a common denominator in order to combine these two fractions into one.

x times y is the common denominator.

We multiply 1/x by y/y.

We multiply 1/y by x/x.

y/(xy) + x/(xy) = (x + y)/(xy)

Works the same as adding two rational numbers.

EG

x = 2 and y = 3

1/2 + 1/3 = ?

2*3 = 6; six is the common denominator.

We multiply 1/2 by 3/3.

We multiply 1/3 by 2/2.

3/6 + 2/6 = (3 + 2)/6 = 5/6