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It does nothing!

4x + 6y = 24

7x + 6y = 9

Subtracting the first equation from the second gives:

3x = - 15 so that x = -5

Substituting the value of x in the first equation gives

-20 + 6y = 24 so that 6y = 44 and so y = 22/3 or 71/3

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13y ago

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