Respuesta :

kritika3375

Answer:

x = 20°

Step-by-step explanation:

Given

3x + 80° + 2x = 180° [ being linear pair ]

5x + 80° = 180°

5x = 180° - 80°

5x = 100°

x = 100° / 5

Therefore x = 20°

Hope it will help. :)

Sarah06109

Answer:

x=20

Step-by-step explanation:

The angles are all on a straight line, therefore they are supplementary. This means they add to 180 degrees.

So,

3x+80+2x=180

Combine like terms

(3x+2x)+80=180

5x+80=180

Subtract 80 from both sides

5x+80-80=180-80

5x=100

Divide both sides by 5

5x/5=100/5

x=20

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