Explanation:
p=n+ 2/d
Multiply both sides of the equation by d.
pd=dn+2
Swap sides so that all variable terms are on the left hand side.
dn+2=pd
Subtract 2 from both sides.
dn=pd−2
The equation is in standard form.
dn=dp−2
Divide both sides by d.
dn = dp−2/d
Dividing by d undoes the multiplication by d.
n= dp−2/d
Divide pd−2 by d.
n=(p−2)/d