Answer:
3
Step-by-step explanation:
42 is 2 x 3 x 7
81 is 3 x 3 x 3 x 3
3 is the greatest common factor
Answer:
90000
Step-by-step explanation:
because 10^4 = 10,000
then 9 x 10,000 = 90,000
1/-3 or 4/-12, as long as you multiply or divide the numerator and the denominator with the same number the fraction will be equivalent. To get 1/-3 I divided 2 with 2 and -6 with 2.