Solve the following pair of linear equations by the substitution method.
 
1.\(x + y = 14\) ; \(x – y = 4\)
 
\((x,y)=(\), \()\)
 
2. \(5x−y=10\) ; \(15x – 3y = 30\)
 
\((x,y)=\)\((\)\(2\),\()\)