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