Respuesta :

lfontgabel

Answer:

X=20

Step-by-step explanation:

The 3 angles all add up to 180º because they are a straight line.

3x + 80 + 2x = 180

5x + 80 = 180

5x + (80-80) = 180-80

5x = 100

5x/5 = 100/5

X=20

Hope this helps!

Aya94
Answer
Straight line = 180
So
3x+80+2x=180
5x +80 =180
5x=180-80
5x=100
x=100/5
x=20
HOPE THAT HELPS