Explicación paso a paso:
2w + 2α = 180
w + α = 90
2θ + 2β.= 18
θ + β. = 90
α + β + x + 3x + θ + W = 360
90 + 90 + 4x = 360
4x = 180
x = 45
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Explicación paso a paso:
2w + 2α = 180
w + α = 90
2θ + 2β.= 18
θ + β. = 90
α + β + x + 3x + θ + W = 360
90 + 90 + 4x = 360
4x = 180
x = 45