Three angles have measures that add to 180°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 ?(1 point) Responses 10x°+20°=180° 10 x plus 20 equals 180 x°−20°=180° x minus 20 equals 180 9x°−20°=180° 9 x minus 20 equals 180 10x°−20°=180°