The given answer (-3,-5),(-3, -5) is incorrect. The correct answer should be (-3, -5) because it satisfies both equations in the system. Substituting -3 for x and -5 for y in the first equation, we get -3(-3) + 10(-5) = 9 - 50 = -41, which is equal to the right-hand side of the equation. Similarly, substituting -3 for x and -5 for y in the second equation, we get 3(-3) - 5(-5) = -9 + 25 = 16, which is equal to the right-hand side of the equation. Therefore, (-3, -5) is the correct solution to the system.