Answer :

7p + 2t = n 
7p = n- 2t
p = ( n-2t ) /7
heyDB
Solving for in this equation 7p+2t=n

Because 2t does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 2t from both sides.
7p=−2t+n

Divide each term in the equation by 7.
7p/7=−2t/7+n/7 

Simplify
p=−2t/7+n/7

p=−2t/7+n/7 is the answer

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