Respuesta :

Answer:

I think the answer is 18 because 20+18=38 and 7x2= 14

Then you would multiply 38 x 2to get 76

14 + 76 = 90

Step-by-step explanation:

The correct answer is 20. This is because a supplementary angle is shown, so we can use 7x+(x+20)=180 to solve. You can see my work below.

I hope this helps <3
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