It is similar because when you scale it larger the shape will be same just because it bigger
Answer:
21
Step-by-step explanation:



so first do the times
then minus
and lastly plus it
15m + 2n, first you have to pair the matching variables, 8m and 7m along with the sign in front of them. so 8m(+7m), you would then add those then do the same with the other, +4n(postive) and -2n, so subtract 2 from 4 and get 2. put them together and it’s 15m+2
9 is the LCM, and the GCF is 27