Respuesta :

mlarsen5000

Answer:

50

Step-by-step explanation:

2x+10+2x-30=180

4x-20=180

4x=200

x=50

msm555

Answer:

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

4x=180+20

x=200/4=50

x=50