$\"\"$

From the triangle ABC figure, the measure of $\"\"$ and the measure of $\"\"$ .

The word $\"\"$ the measure of $\"\"$ equals the measure of $\"\"$ $\"\"$ represent the equation $\"\"$ .

Solve the equation $\"\"$ for x.

Subtract 3 from each side.

$\"\"$

Divide each side by 4.

$\"\"$

Cancel common terms.

$\"\"$ . $\"\"$

The value of $\"\"$ .