Linear Algebra Examples

$X = [\begin{array}{c} 1 & 3 \\ 1 & 3 \end{array}] x + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 1

Reorder factors in $X = [\begin{array}{c} 1 & 3 \\ 1 & 3 \end{array}] x + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$ .

$X = x [\begin{array}{c} 1 & 3 \\ 1 & 3 \end{array}] + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 2

Simplify each term.

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Step 2.1

Multiply $x$ by each element of the matrix.

$X = [\begin{array}{c} x \cdot 1 & x \cdot 3 \\ x \cdot 1 & x \cdot 3 \end{array}] + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 2.2

Simplify each element in the matrix.

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Step 2.2.1

Multiply $x$ by $1$ .

$X = [\begin{array}{c} x & x \cdot 3 \\ x \cdot 1 & x \cdot 3 \end{array}] + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 2.2.2

Move $3$ to the left of $x$ .

$X = [\begin{array}{c} x & 3 x \\ x \cdot 1 & x \cdot 3 \end{array}] + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 2.2.3

Multiply $x$ by $1$ .

$X = [\begin{array}{c} x & 3 x \\ x & x \cdot 3 \end{array}] + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 2.2.4

Move $3$ to the left of $x$ .

$X = [\begin{array}{c} x & 3 x \\ x & 3 x \end{array}] + [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 3

Move all terms containing a variable to the left side.

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Step 3.1

Move all terms containing variables to the left side of the equation.

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Step 3.1.1

Subtract $[\begin{array}{c} x & 3 x \\ x & 3 x \end{array}]$ from both sides of the equation.

$X - [\begin{array}{c} x & 3 x \\ x & 3 x \end{array}] = [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$

Step 3.1.2

Subtract $[\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}]$ from both sides of the equation.

$X - [\begin{array}{c} x & 3 x \\ x & 3 x \end{array}] - [\begin{array}{c} - 4 t^{2} \\ t + 2 \end{array}] = 0$