Explicación paso a paso:
Aplicación 1 :
3x - 20 + 2x + 40 = 180
5x + 20 = 180
5x = 160
x = 32
 = 3 ( 32 ) - 20 = 76°
B = 2 ( 32 ) + 40 = 104°
Aplicación 2 :
3x + 14 = 2x + 48
x = 34
 = 3 ( 34 ) + 14 = 116°
B = 2 ( 34 ) + 48 ) = 116°
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Explicación paso a paso:
Aplicación 1 :
3x - 20 + 2x + 40 = 180
5x + 20 = 180
5x = 160
x = 32
 = 3 ( 32 ) - 20 = 76°
B = 2 ( 32 ) + 40 = 104°
Aplicación 2 :
3x + 14 = 2x + 48
x = 34
 = 3 ( 34 ) + 14 = 116°
B = 2 ( 34 ) + 48 ) = 116°