SOLUTION: THE SUM OF TWO NUMBERS IS 30 AND THEIR DIFFERENCE IS 6. WHAT ARE THE TWO NUMBERS ?

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Question 1032568: THE SUM OF TWO NUMBERS IS 30 AND THEIR DIFFERENCE IS 6. WHAT ARE THE TWO NUMBERS ?
Found 2 solutions by fractalier, ikleyn:
Answer by fractalier(6550) About Me  (Show Source):
You can put this solution on YOUR website!
Call the two numbers x and y. Then we write
x + y = 30 and
x - y = 6
Now add the equations and get
2x = 36 and
x = 18
which means
y = 12

Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.
%2830%2B6%29%2F2 = 18 and %2830-6%29%2F2 = 12.