1.

The sum of 2 numbers ( x and y ) is +12 The difference of the same 2 numbers is -4 1. Which method will you use and why? 2. How will you set up the equation needed to solve? 3. What is the solution expressed as an ordered pair? (x,y)

Answer»

IN THIS WE CAN EASILY FIND THE EQUATION THAN ANY OTHER METHOD .CONDITION 1----X+Y=12CONDITION 2---X-Y=-41 SUBTRACT BOTH THE EQUATION,X+Y=12X-Y=-41-__+__+__2Y=53/2 Y=53/4PUTTING VALUE OF Y INEQATION 1 X+53/4=12 X=12-53/4 X=-5/4.VERFICATION,X+Y=12-5/4+53/4-5+53/448/4=12VERIFIED



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