solve 14n+6p-8n=18p for n

14n + 6p - 8n = 18p

 

First group the ike terms

 

6p + 14n - 8n = 18p

6p + 6n = 18p

 

Subtract 6p on both sides

6p + 6n - 6p = 18p - 6p

6n = 12p

 

Then divide 6 on both sides

6n/6 = 12p/6

 

n = 2p

 

C is the answer

 

Hope this helps ;P