Try another version of this question Solve the following system of equations with the substitution method: `{(x -5 y,=,-51),(y, = ,-3 x -9):}` Answer: `(x,y)=`
Get help: Box 1: Enter your answer as an n-tuple of numbers. Example: (2,5.5172)
Enter DNE for Does Not Exist `(-6,9)`