Question

Examine the figure of two parallel lines cut by a transversal.

What is the value of x?

Answer 1

50

Explanation:

2x+10+2x-30=180

4x-20=180

4x=200

x=50

Answer 2

2x-30+2x+10=180[sum of angle of co interior angle is supplementary]

4x=180+20

x=200/4=50

x=50