Respuesta :

saharalgbory2004

Answer:

30

Step-by-step explanation:

2x + x =90

3x=90

x=90/3

x is 30

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Answer:

[tex]total \: angle \: on \: a \: line \: = 180 \\ x + 2x + 90 = 180 \\ 3x + 90 = 180 \\ 3x = 90 \\ x = 90 \div 3 = 30 \\ thank \: you[/tex]