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4x4 system of equations solver

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This calculator solves system of four equations with four unknowns.

4x4 System of equations solver
Input either decimals or fractions.
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examples
example:ex:
$$ \begin{aligned} x + 2y + z - t & = 5 \\[2ex] \frac{3}{2}x + y + 2z + 2t & = 8 \\[2ex] 4x + 4y + 3z + 4t & = 22 \\[2ex] \frac{2}{5}x + \frac{1}{5}z + t &= 3 \end{aligned} $$
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