SOLUTION: find two numbers whos sum is 138 and whos differece is 88

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Question 1001136: find two numbers whos sum is 138 and whos differece is 88
Answer by ikleyn(52884) About Me  (Show Source):
You can put this solution on YOUR website!
.
x + y = 138,
x - y =  88.

Can you solve this system? 

(Hint: add the two equations, both the left sides and the right sides).