Sen ( 13 x + y )°. Cosec ( 9 x + y + 84°) = 1
Calcular: k = 18 x - 160
Calcular: k = 18 x - 160
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Respuesta:
218
Explicación paso a paso:
13x+y=9x+y+84
4x=84
x=21
k=18(21)-160
k=218