Algebra Examples

$\frac{7 x - 12}{x + 3}$

Step 1

Set the denominator in $\frac{7 x - 12}{x + 3}$ equal to $0$ to find where the expression is undefined.

$x + 3 = 0$

Step 2

Subtract $3$ from both sides of the equation.

$x = - 3$

Step 3