Answer:
B
Step-by-step explanation:
Answer: x = 2
The step by step is attached to this answer, hope it helped!
C 201 and 770
14 and 91 have a common factor of 7 - so not A
B No - as 7 is a factor of 14 and 581
D 12 and 105 are both divisible by 3
So its C
