Question

Whats is the value of x.

Answer 1

x = 20

Explanation:

3x = x + 40

2x = 40

x = 20

Answer 2

20 =x

Explanation:

The angles are vertical angles and vertical angles are equal

x+40 = 3x

Subtract x from each side

x+40-x = 3x-x

40 = 2x

Divide by 2

40/2 = 2x/2

20 =x