Desarrollo y respuesta:
Primer esquema
Se cumple que
α = 3x + 10
β = 180 – (5x – 10)
β = 180 – 5x + 10
β = 190 – 5x
Además:
5x – 10 = 3x + 10
5x – 3x = 10 + 10
2x = 20
x = 20/2
x = 10
Por lo tanto:
α = 3(10) + 10
α = 30 + 10
α = 40°
β = 190 – 5(10)
β = 190 – 50
β = 140°
Segundo esquema
α = 2x + 20
β = 7x – 11
2x + 20 + 7x – 11 = 180
9x + 9 = 180
9x = 180 – 9
9x = 171
x = 171/9
x = 19
α = 2(19) + 20
α = 38 + 20
α = 58°
β = 7(19) – 11
β = 133 – 11
β = 122°
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Verified answer
Desarrollo y respuesta:
Primer esquema
Se cumple que
α = 3x + 10
β = 180 – (5x – 10)
β = 180 – 5x + 10
β = 190 – 5x
Además:
5x – 10 = 3x + 10
5x – 3x = 10 + 10
2x = 20
x = 20/2
x = 10
Por lo tanto:
α = 3x + 10
α = 3(10) + 10
α = 30 + 10
α = 40°
β = 190 – 5x
β = 190 – 5(10)
β = 190 – 50
β = 140°
Segundo esquema
α = 2x + 20
β = 7x – 11
Además:
2x + 20 + 7x – 11 = 180
9x + 9 = 180
9x = 180 – 9
9x = 171
x = 171/9
x = 19
Por lo tanto:
α = 2x + 20
α = 2(19) + 20
α = 38 + 20
α = 58°
β = 7x – 11
β = 7(19) – 11
β = 133 – 11
β = 122°