What does (- 18) + (+ 26) + (- 41) + (+ 15) equal

What does (- 18) + (+ 26) + (- 41) + (+ 15) equal


-18



What is the greatest common factor of 12 and 13


Because they are coprime numbers, their greatest common factor is 1



The greatest common factor of 15 and 12 and 13


1