takialove14 takialove14
  • 18-11-2020
  • Mathematics
contestada

i need help with this ^

i need help with this class=

Respuesta :

kotterful
kotterful kotterful
  • 18-11-2020

Answer:

a=45º

Step-by-step explanation:

The angles in a triangle added up= 180º

so, we can make the equation:

2a-20+2a-20+a-5=180

simplify

5a-45=180

5a=225

a=45

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