Linear Algebra Examples

$x - 17 = 21$

Step 1

Move all terms not containing $x$ to the right side of the equation.

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Step 1.1

Add $17$ to both sides of the equation.

$x = 21 + 17$

Step 1.2

Add $21$ and $17$ .

$x = 38$

Step 2

The domain is the set of all valid $x$ values.

${x | x = 38}$

Step 3