SOLUTION: the sum of three numbers is 123. the second number is 9 less than two times the first numbner. the third number is 6 more than three times the first numbner. what are the three num

Question 172331: the sum of three numbers is 123. the second number is 9 less than two times the first numbner. the third number is 6 more than three times the first numbner. what are the three numbers?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
the sum of three numbers is 123. the second number is 9 less than two times the first number. the third number is 6 more than three times the first numner. what are the three numbers?
--------------------------------
Equations:
x + y + z = 123
y = 2x-9
z = 3x+6
----------------------------
x + y + z = 123
2x - y + 0 = 9
3x + 0 - z = -6
----------------------------
Solve by any method you know to get:
x = 21
y = 33
z = 69
==========================
Cheers,
Stan H.
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