Factor the expression:
7k + 7
This is a sum of two terms: 7k and 7
We must find the Greatest Common Factor of those terms, i.e., the greatest number that is common to both terms.
The first term is 7k
The second term is 7
The only common element is 7. We need to take out 7 from both terms.
Now we divide
7k/7 = k
7/7 =1
Thus, the factorization is:
7k + 7 = 7(k + 1)
Now the expression is a product and not a sum, as required