Answer:
x = 20
Explanation:
5x - 40 and 2x + 20 are vertical angles and are congruent , then
5x - 40 = 2x + 20 ( subtract 2x from both sides )
3x - 40 = 20 ( add 40 to both sides )
3x = 60 ( divide both sides by 3 )
9.4m questions
12.2m answers