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Using Cramer's Rule with a 3x3 System

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Using Cramer's Rule with a 3x3 system
x+y =4

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Solution Summary

A system of equations is solved using Cramer's Rule.

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By using Cramer's Rule, we should rewrite the system into:
1*x+1*y+0*z =4
then the determinant is:
|3 4 1|
D = |2 3 2| ...

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