Question 275950
x+y=10
x-y=2
 now you can eliminate y to get the value of x

x+y=10
x-y=2
  x=12
the value of x is 12

 now we will eliminate x to get the value of y
 we will multiply the second equation by -1 to eliminate x

 x+y=10
-x+y=-2
   2y=8
 2y/2=8/2
    y=4
the value of y is 4