Answer:
n = 3p
Step-by-step explanation:
12n + 7p - 6n = 25p; solve for n
First we will add like terms in the left side
12n - 6n + 7p = 25p
6n + 7p = 25p
Subtract 7p to both sides
6n + 7p - 7p = 25p - 7p
6n = 18p
Now divide 6 from both sides
6n/6 = 18p/6
n = 3p