Given the sum 30=12+18 , rewrite 12+18 using their GCF and multiplication.(
To rewrite 12 + 18 using their greatest common factor (GCF) and multiplication, we need to find the GCF of 12 and 18.
12 can be factored into 2 * 2 * 3, while 18 can be factored into 2 * 3 * 3.
The common factors between 12 and 18 are 2 and 3. The GCF is the product of these common factors, which is 2 * 3 = 6.
So, we can rewrite 12 + 18 as 6 * (2 + 3).