juliejackson45 juliejackson45 09-01-2023 Mathematics Answered Which of these systems of equations has infinitely many solutions? Explain your choice(s). a. (1/2)x - 5y = 10 (-1/2)x + 5y = -10 b. 7x + 2y = -14 -7x + 2y = -14 c. x + 6y = -18 x - 6y = 18 d. (3/4)x - 9y = 12 (-3/4)x + 9y = 12