Respuesta :

Nayefx

Answer:

A)27 degrees

Step-by-step explanation:

to understand this

you need to know about:

  • equation
  • PEMDAS

let's solve:

according to the question

3x-20+4x+11=180

=>7x-9=180

=>7x=180+9

=>7x=189

=>7x/7=189/7

therefore

  • x=27

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