Question 998850: The Rivers depth is three Meters greater than its width.Two times the Rivers depth is equal to six meters more than twice it's width
Answer by ikleyn(52802) (Show Source):
You can put this solution on YOUR website! .
d = w + 3 (first equation)
2d = 2w + 3 (second equation).
The second equation is equivalent to the first one.
In other words, two equations carry the same information as the first one, not more.
In the language of linear algebra, the system is dependent.
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