SOLUTION: Find two numbers whose sum is 47 and whose difference is 7. We will call the two numbers x and y.) x=? y=?

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Question 176001: Find two numbers whose sum is 47 and whose difference is 7.
We will call the two numbers x and y.)
x=?
y=?
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
x+y=47....eq 1
x-y=7.....eq 2
:
rewrite eq 1 to y=47-x and plug that into eq 2
:
x-(47-x)=7
:
x-47+x=7
:
2x=54
:
highlight%28x=27%29
:
highlight%28y=47-27%29=20