Which of these strategies would eliminate a variable in the system of equations? \begin{cases} -7x + 2y = 5 \\\\ 3x - 5y = -5 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ −7x+2y=5 3x−5y=−5 ​