Answer:
x = 70
Step-by-step explanation:
Since the lines are perpendicular then ∠ AED = 90°, thus
x + 20 = 90 ( subtract 20 from both sides )
Answer:ggx
you're right; 13x, 14 - 7x, 12 + 4x, 15 - x
13, 7, 4, 1