A triangle has interior angles of measure (2x+9)°, (3x-14)°, and (5x+20)°. Find the smallest interior angle of this triangle.

(2x+9)°+(3x-14)°+(5x+20)°=180
10x+15=180
10x=165
x=16.5
the least angle is 3(16.5)-14=35.5 degrees