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Home Q & A Board Science-Related Homework Help Mathematics
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irina irina
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11 years ago
In Simultaneous Linear Equations
How can you tell when to use substitution or elimination, such as in the question
1. In five years time, a father will be three times as old as his son. Four years ago, the father was four times as old as his son. Find their present ages.
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nyashanyasha
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11 years ago
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