60 000-(n-12 000)=37 000. (5682-p)+18=1700. (r-1908)-92=4630.

1. n-12000= 60000-37000
n-12000=23000
n= 23000+12000
n=35000

2. 5682-p= 1700-18
5682-p= 1682
p=5682-1682
p=4000

3. r-1908= 4630+92
r-1908= 4722
r= 1908+4722
r=6630