What is the solution of the system of equations? {-3x - 4y - 3z = -7 {2x - 6y + 2z = 3 {5x - 2y + 5z = 9 a. (5,-2,7) b. (-5,2,7) c.(5,2,-7) d. no solution use a matrix to find the solution to the system of equations. {-8x - 8y = -16 {6x - 9y = -108 ,8) b.(6,8) c.(8,-6) solve the system by elimination. {-2x + 2y + 3z = 0 {-2x - y + z = -3 {2x+ 3y+ 3z = 5 d.(6,-8)