x y 1 x y 1Solutionx y 1 equation ONE x y 1 equat

-x + y = 1 x = y = - 1

Solution

-x + y = 1 ---> equation ONE

x + y = -1 ----> equation TWO

We need to solve for x and y.....

Notice first equation has -x and the second has x.. So, when we add equations together, the x\'s go, right? And then, we can find y, right? So, thats what we will do.

-x + y = 1 ---> equation ONE

x + y = -1 ----> equation TWO

Adding :

-x + y + x + y = 1 + (-1)

2y = 1 - 1

2y = 0

y = 0/2

y = 0

Now, plug back this result into EITHER equation 1 or 2 :

x + y = -1

x + 0 = -1

x = -1

So, the solution is :

x = -1 , y = 0 -----> ANSWER