The lines intersect the x axis at a distance 7 , 5 , 7/3 , -17/7
and the slopes of the lines are -1/3 , 1/2 , -3/2 , 7
hence the sides taken in order are x+3y-7 = 0
Solving the equations one by one we get their point of intersections.
and then making the equations of the diagonals we ge:-
1st Diagonal is 4x+5y-7=0,
Similarly the second Diagonal can be found.