Raveesh tells his daughter smithy "seven years ago, I was seven times as old as you were there.Also three years from now , I shall be three times as old as you will be ". If the present ages of simithy and Raveesh are x and y years respectively , the equations for this situation is _________

Question

$\begin{array}{1 1} 7x-y=42,3x-y=-6\\ 7x+y=-42,3x+y=-6 \\ 7x-y=-42,3x-y=-6 \\ 7x-y=42,3x+y=6\end{array} $