What is the GCF of -10 over 20?

Answer 1

The GCF is a characteristic of two or more positive whole numbers.

-- The question describes only a single number.

-- The number described in the question is negative.

-- The number described in the question is a fraction.

The question strikes out in at least three ways, and has no answer.

Answer 2

The GCF of -10 and 20 is 10. The fraction -10/20 reduces to -1/2