Explanation:
2/9w=24
cross multiply
2w=216
w=216/2
w=108
8/9p=12/18
144p=108
p=108/144
p=0.75
2.5c=15.75
c=2.5/15.75
c= 0.16
10/13n=-30/39
390n=-390
n=-390/390
n= -1
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