Solve the following pair of linear equations by the substitution method.
 
1. \(x + y = 14; \ x – y = 4\)
 
\((x,y)=(\),\()\)
 
2. \(4x – y = 4; \ 16x – 4y = 16\)
 
\((x,y)=\)\(( 4,\)\()\)