Question

Factorise fully 18x-9

Answer 1

9 (2x-1)

Explanation:

Grouping

1. Common factor:

18x-9

Solution:

9 (2x-1)

Answer 2

9(2x-1)

Explanation:

common factor of both 9 and 18 is 9

thus, you can take a 9 out

9(2x-1)

(to check if it is correct, you can expand it, and if it is the same as original then it is correct )