SOLUTION: lance is now twice as old as gean. six years ago, the sum of their ages was 9. how old is lance now?

Question 928449: lance is now twice as old as gean. six years ago, the sum of their ages was 9. how old is lance now?
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
x = lance age now
y = gean age now
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x = 2y
x - 6 + y - 6 = 9
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put the system of linear equations into standard form
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x - 2y = 0
x + y = 21
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copy and paste the above standard form linear equations in to this solver:
https://sooeet.com/math/system-of-linear-equations-solver.php
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solution:
x = lance age now = 14
y = gean age now = 7
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Solve quadratic equations, quadratic formula:
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Solve systems of linear equations up to 6-equations 6-variables:
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