SOLUTION: X:Y=3:5 Y=x+7 Find X and Y

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Question 841033: X:Y=3:5
Y=x+7
Find X and Y
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
x%2Fy=3%2F5
1.5x=3y
.
.
y=x%2B7
5y=5x%2B35
Substitute from eq. 1,
5y=3y%2B35
2y=35
highlight%28y=35%2F2%29
Now use either equation to solve for x
35%2F2=x%2B7
x=35%2F2-14%2F2
highlight%28x=21%2F2%29