Which constants can be multiplied by the equations so one variable will be eliminated when the systems are added together? 5x + 13y = 232 12x + 7y = 218 The first equation can be multiplied by –13 and the second equation by 7 to eliminate y. The first equation can be multiplied by 7 and the second equation by 13 to eliminate y. The first equation can be multiplied by –12 and the second equation by 5 to eliminate x. The first equation can be multiplied by 5 and the second equation by 12 to eliminate x.