$\"\"$ $\"\"$

The equation is $\"\"$ .

$\"\"$ (Multiply each side by negative one)

$\"\"$ (Product of two same signs is positive)

$\"\"$ (Product of two different signs is negative)

$\"\"$

Check:

To check the solution, substitute $\"\"$ in original equation.

$\"\"$

$\"\"$ (Product of two same signs is positive)

Compare the values, the equation is true. The solution is $\"\"$ .

$\"\"$

The solution is $\"\"$ .