determine the numbers that must be multiplied to one or both equations in each system to elimate one of the variables.Justify your answer 1.)5x-2y=12 2x+y=7 ------------------------------------------------- 2.)x+3y=5 ------------------------------------------------- 3.) x-4y=12 5x+y= -5 ------------------------------------------------- 4.)-3x+2y=7 5x-4y= -2 ------------------------------------------------- 5.)-2x-5y=10 3x-2y=6
