# Math Help - putting it another way...

1. ## putting it another way...

1 / (302 -3 ) +1 / (117-3)
...

what is the answer.? do you go 299 divided by 1 first then plus 1?

2. Originally Posted by julieneedshelp
1 / (302 -3 ) +1 / (117-3)
...
what is the answer.? do you go 299 divided by 1 first then plus 1?
Hello,

first you have to do the calculation in the brackets. You'll get: $\frac{1}{299}-\frac{1}{114}$
Next you need a common denominator
Prime factorisation of
299 = 13 * 23
114 = 2 * 3 * 19

So the common denominator is 114 * 299 = 34086

Transform your fractions (don't clculate the denominator, it isn't necessary yet!)

$\frac{1}{299} \cdot \frac{114}{114}-\frac{1}{114}\cdot \frac{299}{299}$ = $\frac{-185}{114 \cdot 299}$

Greetings

EB

3. ## thanks for the help!

Awesome! Much appreciated !
cheers

Julie