Solve for x and y:
9x−4y=8,13x+7y=101 (x≠0,y≠0).
3x−1y+9=0,2x+3y=5 (x≠0,y≠0).
Solve for x and y
2/x+3/y=9/xy and 4/x+9/y=21/xy(x≠0 and y≠0)