Which ordered pair (r, s) is the solution to the given system of equations? 5 r plus 7 s is equal to 61 negative 5 r plus 7 s is equal to negative 19

Add the equations to eliminate r: (5r + 7s) + (−5r + 7s) = 61 + (−19), so 14s = 42 and s = 3. Substituting s = 3 into 5r + 7s = 61 gives 5r + 21 = 61, so r = 8. The solution is (8, 3), choice C.

AI-written and checked against the verified answer.