Respuesta:
x = 10º ; 8x = 80º
Explicación paso a paso:
Igualamos a 180º
x + 8x + 90= 180
9x = 180 - 90
x = 90/9
x = 10
8x = 8(10)
8x = 80
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Verified answer
Respuesta:
x = 10º ; 8x = 80º
Explicación paso a paso:
Igualamos a 180º
x + 8x + 90= 180
9x = 180 - 90
x = 90/9
x = 10
8x = 8(10)
8x = 80