Question

Write as
single fraction:
2/3a - 1/b + 3/2ab

Answer 1

(4b - 6a + 9) / 6ab.

Explanation:

The lowest common denominator of 3a, b and 2ab = 6ab

Now to get the numerator we divide each of the 3 denominators into 6ab and multiply the result by the corresponding numerator:

So we have:

2/3a - 1/b + 3/2ab

= (2*2b - 6a +3*3) / 6ab

= (4b - 6a + 9) / 6ab.