Three angles have measures that add to 180° . They have the following angle measures: m∠ABC=(x−6)°, m∠CBD=(4x−14)°, and m∠DBE=5x°. What is the equation to solve for x?
9x°−20°=180°
10x°−20°=180°
x°−20°=180°
10x°+20°=180°
9x°−20°=180°
10x°−20°=180°
x°−20°=180°
10x°+20°=180°