Answer :

12p -5=25
12p = 30
p=30/12
p=5/2

3n +7=25
3n = 18
n=6
12p-5=25
12p=25+5
12p=30
p=30/12
p=5/2
p=2.5

3n+7=25
3n=25-7
3n=18
n=18/3
n=6

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