Question

How do you find the LCD for `7/(3b), 3/b`?

Answer 1

`3b` is divisible by both `3b and b`

Explanation:

The LCD has to be divisible by both denominators.

However, in this case, `3b` has the other denominator as one of its factors. Therefore `3b` is the LCD.

Multiply the second fraction by `3/3`

`7/(3b) ," " 3/b xx 3/3`

`7/(3b) ," "9/(3b)`