SOLUTION: One number is 8 less than a second number. Three times the first is 15 more than 6 times the second. Find the numbers.

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Question 820364: One number is 8 less than a second number. Three times the first is 15 more than 6 times the second. Find the numbers.
Found 2 solutions by stanbon, ewatrrr:
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
One number is 8 less than a second number. Three times the first is 15 more than 6 times the second. Find the numbers.
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Equations:
x = y-8
3x = 6y+15
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Substitute for "x" and solve for "y":
3(y-8) = 3(2y+5)
y-8 = 2y+5
y = -13
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Solve for "x":
x = y-8
x = -13-8
x = -21
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Cheers,
Stan H.
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Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
Hi,
One number is 8 less than a second number green%28x%29,
the first number represented by (x-8)
Question states: Three times the first is 15 more than 6 times the second.
3(x-8) = 6x ****
3x - 24 = 6x
-24 = 3x
-8 = x. the numbers are -8 and -16
CHECKING our answer***
3%28-16%29+=+-48+=+6%28-8%29}