Respuesta :

capsasha2

Answer:

x = 20

Step-by-step explanation:

  1. Write out an equation to describe an angle: 7x + (x + 20) = 180
  2. Combine like terms: 8x + 20 = 180
  3. Subtract 20 from each side, so it now looks like this: 8x = 160
  4. Divide each side by 8 to cancel out the 8 next to x. It should now look like this: x = 20

I hope this helps!

z0mba

Answer: X = 20

Step-by-step explanation: We have to get 360 degrees in total so plug in 20 for x. 7x20=140. 140+140=280 for both sides. 20+20=40. 40+40=80 for both sides.

280+80=360

So x = 20.