Question

How to factorise 24x+3

Answer 1

The first thing to do is to work out the biggest number that goes into bother 24 and 3.  As the only that goes into three- other than 1- is itself, one can assume this is the number we are looking for.  

Next, divide bother numbers by 3. 
24 / 3 = 8
 3 / 3 = 1

You now take 3 out of the brackets, and leave 8 and 1. 24x / 3 = 8x. 

3(8x + 1)