SOLUTION: if x+y= - 10 and x - y =2 , what is the value of x ?

Question 548672: if x+y= - 10 and x - y =2 , what is the value of x ?
Found 2 solutions by jim_thompson5910, edjones:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Add the two equations to get

and then solve for x to get

Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
x+y=-10
x-y=2
--------Add
2x==-8
.
x=-4
.
Ed
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