Final answer:
The expression 12x - 20 is equivalent to 4(3x - 5).
Step-by-step explanation:
The expression 12x - 20 is equivalent to option OB. 4(3x - 5).
To simplify the expression, we can distribute the 4 to both terms inside the parentheses:
4(3x) - 4(5) = 12x - 20
Therefore, option OB is the correct equivalent expression.
Learn more about Expression simplification