Algebra Examples

$y = x + 4$ $y - 4 = x$

Step 1

Replace all occurrences of $y$ with $x + 4$ in each equation.

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Step 1.1

Replace all occurrences of $y$ in $y - 4 = x$ with $x + 4$ .

$(x + 4) - 4 = x$

$y = x + 4$

Step 1.2

Simplify the left side.

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Step 1.2.1

Combine the opposite terms in $(x + 4) - 4$ .

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Step 1.2.1.1

Subtract $4$ from $4$ .

$x + 0 = x$

$y = x + 4$

Step 1.2.1.2

Add $x$ and $0$ .

$x = x$

$y = x + 4$

$x = x$

$y = x + 4$

$x = x$

$y = x + 4$

$x = x$

$y = x + 4$

Step 2

Remove any equations from the system that are always true.

$y = x + 4$

Step 3

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