Answer:
10(q - 3)
Explanation:
1) Find the Greatest Common Factor (GCF).
What is the largest number that divides evenly into 10q and - 30?
It is 10.
What is the highest degree of q that divides evenly into 10q and -30?
It is 1, since q is not in every term.
Multiplying the results above,
The GCF is 10.
2) Factor out the GCF. (Write the GCF first. Then, in parentheses, divide each term by the GCF.)
10 (10q/10 - 30/10)
3) Simplify each term in parentheses.
10(q - 3)