Algebra Examples

$\frac{5 x - 18}{x - 7}$

Step 1

Set the denominator in $\frac{5 x - 18}{x - 7}$ equal to $0$ to find where the expression is undefined.

$x - 7 = 0$

Step 2

Add $7$ to both sides of the equation.

$x = 7$

Step 3