Question

Elimination method using Addition and Subtraction x-y=2 and x+y=-3

Answer 1

x=-1/2, y= -5/2

Explanation:

x-y=2

x+y=-3

Add these together to eliminate y

x-y=2

x+y=-3

---------------

2x = -1

2x/2 =-1/2

x = -1/2

Now we need to find y

x+y = -3

-1/2 +y = -3

Add 1/2 to each side

-1/2 +1/2+y = -3+1/2

y = -6/2+1/2

y =-5/2