m-(647-47)=3800
m=3800+(647-47)
m= 3800+600
m= 4400
60000-(n+12000)=37000
60000-37000= n+12000
23000= n+12000
n=23000-12000
n= 11000
(5682-p)+18=1700
5682-p= 1700-18
5682-p=1682
p= 5682-1682
p=4000
(r-1908)-92=4630
(r-1908)= 4630+92=4722
r= 4722+1908
r= 6630