Question

A pair of vertical angles has measures (2y+5)° and (4y)°. What is the value of y?

Answer 1

5/2

Explanation:

Vertical angles have the same amount of degrees.

So,

2y + 5 = 4y

5 = 2y

5/2 = y

Answer 2

5/2 =y

Explanation:

Vertical angles are equal

2y+5 = 4y

Subtract 2y from each side

2y-2y+5 = 4y-2y

5 = 2y

Divide by 2

5/2 = 2y/2

5/2 =y