SOLUTION: two times a number added to another number is 25. three times the first number minus the other number is 20

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Question 799746: two times a number added to another number is 25. three times the first number minus the other number is 20
Answer by rfer(16322) About Me  (Show Source):
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2x+y=25
3x-y=20
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y=25-2x
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3x-(25-2x)=20
3x-25+2x=20
5x=20+25
5x=45
x=45/5
x=9
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2*9+y=25
18+y=25
y=25-18
y=7
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2x+y=25
2*9+7=25
(9,7)