How do you subtract \frac { 13} { 14s } - \frac { 11} { 49s }?

1 Answer
Mar 17, 2018

69/(98s)

Explanation:

First we find common denominators. I did by multiplying each denominator to the other fraction. Should look like this

((49)13)/((49)14s)-((14)11)/((14)49s)

Then we get
637/(686s)-154/(686s)

(637-154)/(686s)

483/(686s)

There is a common multiple of 7 between the numerator and denominator. So we then divide the numerator and denominator by 7, giving us

69/(98s)