Answer:
62°
Step-by-step explanation:
The 2 shown angles form a straight angle and sum to 180°, that is
7x + 20 + 4x + 6 = 180
11x + 26 = 180 ( subtract 26 from both sides )
11x = 154 ( divide both sides by 11 )
x = 14
the acute angle = 4x + 6 = (4 × 14) + 6 = 56 + 6 = 62°
