SOLUTION: Gaurav is 3 years older than the twins, and five years younger than his sister. the sum of all their ages is 39. how old is each person?
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Question 942132: Gaurav is 3 years older than the twins, and five years younger than his sister. the sum of all their ages is 39. how old is each person? Answer by TimothyLamb(4379) (Show Source):
You can put this solution on YOUR website! x = gustav age
y = twins age
z = sister age
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x = y + 3
x = z - 5
x + 2y + z = 39
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put the system of linear equations into standard form
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x - y = 3
x - z = -5
x + 2y + z = 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 = 10
y = 7
z = 15
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