Respuesta :

suyash67

[tex]x + 30 + 2x + 90 = 180[/tex]

[tex]3x + 120 = 180 \\ 3x = 180 - 120 \\ \: \: \: 3x = 60 \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ x = \frac{60}{3} \: \: \: \: \: \: \: \: \: \: \: \\ x = 20 \: \: \: \: \: \: \: \: \: \: \: \: [/tex]

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clarch19

Answer:

x+30 + 2x + 90 = 180

3x + 120 = 180

3x = 60

x = 20

Step-by-step explanation:

there are 180 degrees in a triangle