odpoveď: # X = -8/3 # # Y = 17/6 # vysvetlenie: # 5x + 4y = -2 # # X-4y = -14 # Pridaním prvej rovnice k druhej rovnici dostaneme # 5x + 4y + x-4y = -2-14 # # X-4y = -14 # # 6x = -16 # # X-4y = -14 # # X = -16/6 # # X-4y = -14 # # X = -8/3 # # -8 / 3-4y = -14 # # X = -8/3 # # 4y = -8/3 + 42/3 # # X = -8/3 # # 4y = 34/3 # # X = -8/3 # # Y = 34/12 # # X = -8/3 # # Y = 17/6 #
