Answer:
The answer is 6
Step-by-step explanation:
What you do is this.
3/9 times 18/1 because you need to make 18 a fraction and then multiply. And you will get 6
the greatest factor is 8
6x-21
1) draw diagram (in image)
BD=2x-21+4x
combine Like terms
equals 56
1.225 cm long
