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Section 12.1 Systems of Linear Equations; Substitution and ...

Section 12.1 Systems of Linear Equations; Substitution and ...

Section 12.1 Systems of Linear Equations; Substitution and ...

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⎧x+<br />

y+ 2z = 1<br />

⎪<br />

Solve: ⎨2x−<br />

y+ z = 2<br />

⎪ ⎩4x+<br />

y+ 5z = 4

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