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

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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) About Me  (Show Source):
You can put this solution on YOUR website!
Add the two equations to get


%28x%2By%29%2B%28x+-+y%29+=-10%2B2

2x=-8


and then solve for x to get


2x=-8

2x%2F2=-8%2F2

x=-4

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