Precalculus Examples

$3 x - 4 y + z = 14$ , $x + y = 7$

Step 1

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$3 x - 4 y + z = 14, x + y = 7$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$