You can put this solution on YOUR website! x = amy age
y = kevin age
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x = y + 3
x + y = 39
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put the system of linear equations into standard form
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x - y = 3
x + y = 39
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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 = 21
y = 18
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You can put this solution on YOUR website! Let = Amy's age now
Let = Kevin's age now
(1)
(2)
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Substitute (1) into (2)
(2)
(2)
(2)
(2)
Kevin is 18
check:
(1)
(1)
and
(2)
(2)
OK
