Respuesta :

Step-by-step explanation:

x+2x+4+19=180

3x+23=180

3x=180-23

3x=157

x=157/3

Step-by-step explanation:

x+4+2x+19=180

x+2x+4+19=180

3x+23=180

3x=180-23

3/3x=177/3

x=59

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